!1253 media: saa7134: fix use after free bug in saa7134_finidev due to race condition

Merge Pull Request from: @ci-robot 
 
PR sync from: Longlong Xia <xialonglong1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/O25ROO7NSR27YAETYTL5DMZW7DV6CNOO/ 
 
 
Link:https://gitee.com/openeuler/kernel/pulls/1253

 

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