mm/slab_common.c: use kmem_cache_free()

Here, free memory is allocated using kmem_cache_zalloc.  So, use
kmem_cache_free instead of kfree.

This is done using Coccinelle and semantic patch used
is as follows:

@@
expression x,E,c;
@@

 x = \(kmem_cache_alloc\|kmem_cache_zalloc\|kmem_cache_alloc_node\)(c,...)
 ... when != x = E
     when != &x
?-kfree(x)
+kmem_cache_free(c,x)
Signed-off-by: NVaishali Thakkar <vthakkar1994@gmail.com>
Acked-by: NChristoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Acked-by: NDavid Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

mm/slab_common.c

@@ -331,7 +331,7 @@ do_kmem_cache_create(char *name, size_t object_size, size_t size, size_t align,
 
 out_free_cache:
 	memcg_free_cache_params(s);
-	kfree(s);
+	kmem_cache_free(kmem_cache, s);
 	goto out;
 }