!5254 tomoyo: fix UAF write bug in tomoyo_write_control()

Merge Pull Request from: @ci-robot 
 
PR sync from: felix <fuzhen5@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/JWUE6R45Y6IXS6MCZGNNNI2DGI23IUYB/ 
 
https://gitee.com/src-openeuler/kernel/issues/I95LPF 
 
Link:https://gitee.com/openeuler/kernel/pulls/5254

 

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