Return matchSuccess() in RemoveNopSConvertOp if success.

PiperOrigin-RevId: 285008345

iree/compiler/Translation/SPIRV/AdjustIntegerWidthPass.cpp

diff --git a/iree/compiler/Translation/SPIRV/AdjustIntegerWidthPass.cpp b/iree/compiler/Translation/SPIRV/AdjustIntegerWidthPass.cpp
index 88392e5..9397dfc 100644
--- a/iree/compiler/Translation/SPIRV/AdjustIntegerWidthPass.cpp
+++ b/iree/compiler/Translation/SPIRV/AdjustIntegerWidthPass.cpp
@@ -220,7 +220,7 @@
     if (t1 != t2) return matchFailure();
     auto zero = spirv::ConstantOp::getZero(t1, op.getLoc(), &rewriter);
     rewriter.replaceOpWithNewOp<spirv::IAddOp>(op, op.operand(), zero);
-    return matchFailure();
+    return matchSuccess();
   }
 };