!7867 media: bttv: fix use after free error due to btv->timeout timer

Merge Pull Request from: @ci-robot 
 
PR sync from: Ye Bin <yebin10@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/ZD3PYEFYSDF5CWPZMYY52TTDSYOTF3EW/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9RFON 
 
Link:https://gitee.com/openeuler/kernel/pulls/7867

 

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