[MLIR] Apply clang-tidy fixes for llvm-else-after-return in SuperVectorize.cpp (NFC)

Author: joker-eph

mlir/lib/Dialect/Affine/Transforms/SuperVectorize.cpp

@@ -978,12 +978,11 @@ static Operation *vectorizeAffineApplyOp(AffineApplyOp applyOp,
       LLVM_DEBUG(
           dbgs() << "\n[early-vect]+++++ affine.apply on vector operand\n");
       return nullptr;
-    } else {
-      Value updatedOperand = state.valueScalarReplacement.lookupOrNull(operand);
-      if (!updatedOperand)
-        updatedOperand = operand;
-      updatedOperands.push_back(updatedOperand);
     }
+    Value updatedOperand = state.valueScalarReplacement.lookupOrNull(operand);
+    if (!updatedOperand)
+      updatedOperand = operand;
+    updatedOperands.push_back(updatedOperand);
   }
 
   auto newApplyOp = AffineApplyOp::create(