code review feedback

Author: hekota

llvm/lib/Target/DirectX/DXILResourceImplicitBinding.cpp

@@ -135,15 +135,17 @@ PreservedAnalyses DXILResourceImplicitBinding::run(Module &M,
 
   DXILResourceBindingInfo &DRBI = AM.getResult<DXILResourceBindingAnalysis>(M);
   DXILResourceTypeMap &DRTM = AM.getResult<DXILResourceTypeAnalysis>(M);
-  if (DRBI.hasImplicitBinding()) {
-    if (assignBindings(M, DRBI, DRTM)) {
-      PreservedAnalyses PA;
-      PA.preserve<DXILResourceBindingAnalysis>();
-      PA.preserve<DXILResourceTypeAnalysis>();
-      return PA;
-    }
-  }
-  return PreservedAnalyses::all();
+
+  if (!DRBI.hasImplicitBinding())
+    return PreservedAnalyses::all();
+
+  if (!assignBindings(M, DRBI, DRTM))
+    return PreservedAnalyses::all();
+
+  PreservedAnalyses PA;
+  PA.preserve<DXILResourceBindingAnalysis>();
+  PA.preserve<DXILResourceTypeAnalysis>();
+  return PA;
 }
 
 namespace {