AMDGPU: Use return value of MorphNodeTo

llvm-svn: 319704
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
index 574f16c..4d86c17 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUISelDAGToDAG.cpp
@@ -356,9 +356,7 @@
      Ops.push_back(N->getOperand(i));
   }
   Ops.push_back(Glue);
-  CurDAG->MorphNodeTo(N, N->getOpcode(), N->getVTList(), Ops);
-
-  return N;
+  return CurDAG->MorphNodeTo(N, N->getOpcode(), N->getVTList(), Ops);
 }
 
 static unsigned selectSGPRVectorRegClassID(unsigned NumVectorElts) {