!5755 sh: push-switch: Reorder cleanup operations to avoid use-after-free bug

Merge Pull Request from: @ci-robot 
 
PR sync from: Guan Jing <guanjing6@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/J2ZRJSZVNU2IZ7TDHJBJ27VW2D5QH2RO/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9CTGE 
 
Link:https://gitee.com/openeuler/kernel/pulls/5755

 

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