[Sema] Remove redundant check in an else branch. NFC

after https://reviews.llvm.org/D83788

Fix #91090

Author: MaskRay

clang/lib/Sema/SemaExpr.cpp

@@ -17208,11 +17208,11 @@ bool Sema::DiagnoseAssignmentResult(AssignConvertType ConvTy,
     }
     CheckInferredResultType = DstType->isObjCObjectPointerType() &&
       SrcType->isObjCObjectPointerType();
-    if (!CheckInferredResultType) {
-      ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this);
-    } else if (CheckInferredResultType) {
+    if (CheckInferredResultType) {
       SrcType = SrcType.getUnqualifiedType();
       DstType = DstType.getUnqualifiedType();
+    } else {
+      ConvHints.tryToFixConversion(SrcExpr, SrcType, DstType, *this);
     }
     MayHaveConvFixit = true;
     break;