!8865 staging: rtl8712: fix use-after-free in rtl8712_dl_fw

Merge Pull Request from: @ci-robot 
 
PR sync from: Jialin Zhang <zhangjialin11@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/BMHGURQGKL6DIY4FBLVDESSH4VRTM77O/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9RCV5 
 
Link:https://gitee.com/openeuler/kernel/pulls/8865

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: Wei Li <liwei391@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: Jialin Zhang <zhangjialin11@huawei.com>