!8656 mm, slub: fix potential memoryleak in kmem_cache_open()

Merge Pull Request from: @ci-robot 
 
PR sync from: Ze Zuo <zuoze1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XSPBOEWAIWWJFT5KCUS4W7CVQ7SR7ASE/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9RC3G 
 
Link:https://gitee.com/openeuler/kernel/pulls/8656

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>