Merge branch 'slab/for-6.1/trivial' into slab/for-next

Trivial fixes and cleanups:
- unneeded variable removals, by ye xingchen

Author: tehcaster

mm/slab_common.c

@@ -511,13 +511,9 @@ EXPORT_SYMBOL(kmem_cache_destroy);
  */
 int kmem_cache_shrink(struct kmem_cache *cachep)
 {
-	int ret;
-
-
 	kasan_cache_shrink(cachep);
-	ret = __kmem_cache_shrink(cachep);
 
-	return ret;
+	return __kmem_cache_shrink(cachep);
 }
 EXPORT_SYMBOL(kmem_cache_shrink);
 

mm/slub.c

@@ -5837,17 +5837,14 @@ static ssize_t slab_attr_show(struct kobject *kobj,
 {
 	struct slab_attribute *attribute;
 	struct kmem_cache *s;
-	int err;
 
 	attribute = to_slab_attr(attr);
 	s = to_slab(kobj);
 
 	if (!attribute->show)
 		return -EIO;
 
-	err = attribute->show(s, buf);
-
-	return err;
+	return attribute->show(s, buf);
 }
 
 static ssize_t slab_attr_store(struct kobject *kobj,
@@ -5856,16 +5853,14 @@ static ssize_t slab_attr_store(struct kobject *kobj,
 {
 	struct slab_attribute *attribute;
 	struct kmem_cache *s;
-	int err;
 
 	attribute = to_slab_attr(attr);
 	s = to_slab(kobj);
 
 	if (!attribute->store)
 		return -EIO;
 
-	err = attribute->store(s, buf, len);
-	return err;
+	return attribute->store(s, buf, len);
 }
 
 static void kmem_cache_release(struct kobject *k)