!9503 v2 watchdog: cpu5wdt.c: Fix use-after-free bug caused by cpu5wdt_trigger

Merge Pull Request from: @ci-robot 
 
PR sync from: Xiongfeng Wang <wangxiongfeng2@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/ZOHZOVLTTB2LOPPXUTL4PR64OMKAESV6/ 
 
https://gitee.com/src-openeuler/kernel/issues/IA7D7P 
 
Link:https://gitee.com/openeuler/kernel/pulls/9503

 

Reviewed-by: Wei Li <liwei391@huawei.com>
Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>