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

Author: joker-eph

mlir/lib/Dialect/Vector/IR/ScalableValueBoundsConstraintSet.cpp

@@ -108,7 +108,8 @@ ScalableValueBoundsConstraintSet::computeScalableBound(
     if (boundType == BoundType::EQ && !invalidBound(lowerBound) &&
         lowerBound[0] == upperBound[0]) {
       return lowerBound[0];
-    } else if (boundType == BoundType::LB && !invalidBound(lowerBound)) {
+    }
+    if (boundType == BoundType::LB && !invalidBound(lowerBound)) {
       return lowerBound[0];
     } else if (boundType == BoundType::UB && !invalidBound(upperBound)) {
       return upperBound[0];