!5550 pciehp: clear p_slot->work.data after powering off a slot

Merge Pull Request from: @ci-robot 
 
PR sync from: Jialin Zhang <zhangjialin11@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/BJF7N7AKJZIHNP53TL4K3MWSEYEYBHIC/ 
 
https://gitee.com/openeuler/kernel/issues/I8Z2JH 
 
Link:https://gitee.com/openeuler/kernel/pulls/5550

 

Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>