Not really.
angelfire.com/mo2/blackmormon/q38.htm
Q. Didn’t Joseph Smith himself at one time approved of Negro slavery, and condemned Abolitionists?
A. Yes. Joseph Smith did condemn abolition in the early 1830s. In the 1830s the Prophet Joseph Smith seemed to agree with slavery. In 1836 he wrote:
“I do not believe that the people of the North have any more right to say that the South shall not have slaves, than the South have to say the North shall.
All men are to be taught to repent; but we have no right to interfere with slaves, contrary to the mind and will of their masters. In fact it would be much better and more prudent not to preach at all to slaves until after their masters are converted, and then teach the masters to use them with kindness; remembering that they are accountable to God, and the servants are bound to serve their masters with singleness of heart, without murmuring.” (Messenger and Advocate 2:289)
The Prophet Joseph Smith did condemn “abolitionists” in 1833; soon after the Nat Turner rebellion in Virginia. Nathaniel Turner was a black slave who claimed that a black angel visited him and commanded him to free the Negroes from slavery. Turner ran away from his master and gained a following of run-away and free Negroes. His methods were violent, and his rebellion ended-up with the deaths of many innocent people; both black and white. He was hanged, and his rebellion failed. Not only did it fail, but it inspired the Southern states to cease their liberalizing of the rights of slaves, and it also ended the Southern white colonialist movement which sought to free blacks and repatronize them to Africa. It was, for the Negroes and those whites in the South who wanted blacks free, a total and absolute disaster.
Joseph Smith did condemn radical Abolitionists who advocated violence, or who sought to free blacks without thought of the impact of the Southern economy or how blacks would fair in the South. To avoid these problems, Joseph Smith recommended that Congress sell federal public lands (at that time the federal government, in the name of the people, owned millions of acres of land) and use the money to purchase the slaves, and then either to send the freed black slaves into Mexico (where classism existed but not racism), or to “educate them and give them equal rights”. The Prophet knew that without these collateral moves the blacks would not be freed without violence, and the freed blacks would not be equal to the whites. History has proven him correct. Although blacks were free, their lives changed very little. They were soon on the bottom-half of a caste system, and apartheid-like laws kept them powerless and most often poor.
The servitude that existed in the time of Abraham (who had servants) and Israel was much different than the slavery of the South in the United States at the time of Joseph Smith!. Servants in the time of Abraham was considered part of the family; although they did not have equal rights to sons and daughters in regards to inheritance. Southern slavery did contain such patriarchal attitudes on occasion, but stealing people from Africa, bringing them across the ocean in chains and horrible living conditions where up to half would perish, and then treating them like animals was not a noble system of servitude but rather an evil and corrupt institution that the Prophet came out squarely and openly against in the 1840s; when he became more familiar with the Southern system of slavery.
You gotta admire Joseph Smith.

He learned with time and reason. Joseph was born in 1805. In the early 1830’s he was still a young man, learning by doing and by reading.