!2687 integrity: Fix possible multiple allocation in integrity_inode_get()

Merge Pull Request from: @ci-robot 
 
PR sync from: felix <fuzhen5@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/C3NSBORLXDNHHO763RZVK5X2KV5SWQGL/ 
 
https://gitee.com/openeuler/kernel/issues/I8C2DB 
 
Link:https://gitee.com/openeuler/kernel/pulls/2687

 

Reviewed-by: Jialin Zhang <zhangjialin11@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>