Fix MKLDNNSum cpp test failure (#12080)
Fix MKLDNNSum cpp test failure (#12080)


zhreshold/mxnet,dmlc/mxnet,tlby/mxnet,ptrendx/mxnet,mbaijal/incubator-mxnet,mbaijal/incubator-mxnet,larroy/mxnet,zhreshold/mxnet,dmlc/mxnet,leezu/mxnet,mbaijal/incubator-mxnet,DickJC123/mxnet,dmlc/mxnet,ptrendx/mxnet,DickJC123/mxnet,mbaijal/incubator-mxnet,larroy/mxnet,leezu/mxnet,tlby/mxnet,tlby/mxnet,dmlc/mxnet,leezu/mxnet,dmlc/mxnet,larroy/mxnet,apache/incubator-mxnet,yajiedesign/mxnet,szha/mxnet,leezu/mxnet,larroy/mxnet,mbaijal/incubator-mxnet,zhreshold/mxnet,tlby/mxnet,ptrendx/mxnet,zhreshold/mxnet,larroy/mxnet,dmlc/mxnet,sxjscience/mxnet,yajiedesign/mxnet,eric-haibin-lin/mxnet,tlby/mxnet,tlby/mxnet,sxjscience/mxnet,ForkedReposBak/mxnet,ptrendx/mxnet,eric-haibin-lin/mxnet,reminisce/mxnet,apache/incubator-mxnet,sxjscience/mxnet,reminisce/mxnet,yajiedesign/mxnet,DickJC123/mxnet,szha/mxnet,zhreshold/mxnet,apache/incubator-mxnet,dmlc/mxnet,eric-haibin-lin/mxnet,larroy/mxnet,reminisce/mxnet,szha/mxnet,dmlc/mxnet,ForkedReposBak/mxnet,eric-haibin-lin/mxnet,reminisce/mxnet,sxjscience/mxnet,leezu/mxnet,yajiedesign/mxnet,szha/mxnet,reminisce/mxnet,eric-haibin-lin/mxnet,larroy/mxnet,mbaijal/incubator-mxnet,leezu/mxnet,ForkedReposBak/mxnet,reminisce/mxnet,szha/mxnet,tlby/mxnet,yajiedesign/mxnet,ptrendx/mxnet,eric-haibin-lin/mxnet,mbaijal/incubator-mxnet,reminisce/mxnet,eric-haibin-lin/mxnet,DickJC123/mxnet,leezu/mxnet,ptrendx/mxnet,apache/incubator-mxnet,eric-haibin-lin/mxnet,sxjscience/mxnet,ForkedReposBak/mxnet,ptrendx/mxnet,zhreshold/mxnet,zhreshold/mxnet,tlby/mxnet,szha/mxnet,sxjscience/mxnet,mbaijal/incubator-mxnet,reminisce/mxnet,tlby/mxnet,ptrendx/mxnet,reminisce/mxnet,szha/mxnet,ForkedReposBak/mxnet,leezu/mxnet,yajiedesign/mxnet,reminisce/mxnet,eric-haibin-lin/mxnet,ForkedReposBak/mxnet,ForkedReposBak/mxnet,ptrendx/mxnet,yajiedesign/mxnet,szha/mxnet,zhreshold/mxnet,ForkedReposBak/mxnet,sxjscience/mxnet,ptrendx/mxnet,yajiedesign/mxnet,sxjscience/mxnet,dmlc/mxnet,zhreshold/mxnet,yajiedesign/mxnet,larroy/mxnet,leezu/mxnet,szha/mxnet,ForkedReposBak/mxnet,mbaijal/incubator-mxnet,sxjscience/mxnet,larroy/mxnet,tlby/mxnet