cifs: Fix to use kmem_cache_free() instead of kfree()

memory allocated by kmem_cache_alloc() in alloc_cache_entry()
should be freed using kmem_cache_free(), not kfree().

Fixes: 34a44fb160f9 ("cifs: Add DFS cache routines")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>

fs/cifs/dfs_cache.c

@@ -413,7 +413,7 @@ alloc_cache_entry(const char *path, const struct dfs_info3_param *refs,
 
 	ce->ce_path = kstrdup_const(path, GFP_KERNEL);
 	if (!ce->ce_path) {
-		kfree(ce);
+		kmem_cache_free(dfs_cache_slab, ce);
 		return ERR_PTR(-ENOMEM);
 	}
 	INIT_HLIST_NODE(&ce->ce_hlist);
@@ -422,7 +422,7 @@ alloc_cache_entry(const char *path, const struct dfs_info3_param *refs,
 	rc = copy_ref_data(refs, numrefs, ce, NULL);
 	if (rc) {
 		kfree(ce->ce_path);
-		kfree(ce);
+		kmem_cache_free(dfs_cache_slab, ce);
 		ce = ERR_PTR(rc);
 	}
 	return ce;