!8186 ALSA: hda: Fix possible null-ptr-deref when assigning a stream

Merge Pull Request from: @ci-robot 
 
PR sync from: Zeng Heng <zengheng4@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/4H26GERVJZ7SDLRG3EQHE7IGIKKCCPZ7/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9RFHM 
 
Link:https://gitee.com/openeuler/kernel/pulls/8186

 

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