No, he voted against it. Even wrote an op-ed against it -
Congress Should Reject The Bad Iran Deal
https://www.washingtonpost.com/opin...73967a143d3_story.html?utm_term=.cdc2664a185d
"Corker, the chairman of the Senate Foreign Relations Committee, was in fact a vehement critic of the deal that emerged from international negotiations in the summer of 2015. After the deal was unveiled, he
wrote in an op-ed for The Washington Post that "Congress should reject this deal and send it back to the President."
Corker plotted efforts to block the deal, banding with Republicans -- and even some Democrats -- in an attempt to block the deal."
http://www.cnn.com/2017/10/24/politics/donald-trump-bob-corker-iran-deal-fact-check/index.html
Seriously, start reading better sources.