fix tensor usage in sgd-op
fix tensor usage in sgd-op

tensor-tang/Paddle,reyoung/Paddle,PaddlePaddle/Paddle,reyoung/Paddle,hedaoyuan/Paddle,Canpio/Paddle,QiJune/Paddle,pengli09/Paddle,putcn/Paddle,lispc/Paddle,jacquesqiao/Paddle,luotao1/Paddle,reyoung/Paddle,lcy-seso/Paddle,QiJune/Paddle,lispc/Paddle,yu239/Paddle,tensor-tang/Paddle,baidu/Paddle,luotao1/Paddle,baidu/Paddle,hedaoyuan/Paddle,pengli09/Paddle,pengli09/Paddle,lcy-seso/Paddle,tensor-tang/Paddle,pengli09/Paddle,PaddlePaddle/Paddle,pkuyym/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,tensor-tang/Paddle,lispc/Paddle,luotao1/Paddle,PaddlePaddle/Paddle,pkuyym/Paddle,baidu/Paddle,PaddlePaddle/Paddle,Canpio/Paddle,pkuyym/Paddle,QiJune/Paddle,Canpio/Paddle,lcy-seso/Paddle,lispc/Paddle,pengli09/Paddle,pengli09/Paddle,pengli09/Paddle,baidu/Paddle,chengduoZH/Paddle,putcn/Paddle,reyoung/Paddle,luotao1/Paddle,yu239/Paddle,jacquesqiao/Paddle,yu239/Paddle,hedaoyuan/Paddle,QiJune/Paddle,putcn/Paddle,hedaoyuan/Paddle,yu239/Paddle,yu239/Paddle,Canpio/Paddle,PaddlePaddle/Paddle,hedaoyuan/Paddle,pkuyym/Paddle,putcn/Paddle,hedaoyuan/Paddle,QiJune/Paddle,Canpio/Paddle,lcy-seso/Paddle,lispc/Paddle,putcn/Paddle,jacquesqiao/Paddle,yu239/Paddle,PaddlePaddle/Paddle,baidu/Paddle,yu239/Paddle,tensor-tang/Paddle,Canpio/Paddle,chengduoZH/Paddle,reyoung/Paddle,jacquesqiao/Paddle,lispc/Paddle,lispc/Paddle,putcn/Paddle,jacquesqiao/Paddle,reyoung/Paddle,hedaoyuan/Paddle,Canpio/Paddle,chengduoZH/Paddle,chengduoZH/Paddle,luotao1/Paddle,luotao1/Paddle,lispc/Paddle,pkuyym/Paddle,pengli09/Paddle,luotao1/Paddle,QiJune/Paddle,pkuyym/Paddle,lcy-seso/Paddle,yu239/Paddle,jacquesqiao/Paddle,chengduoZH/Paddle,lcy-seso/Paddle,hedaoyuan/Paddle