!6642 v3 x86/hyperv: Fix NULL deref in set_hv_tscchange_cb() if Hyper-V setup fails

Merge Pull Request from: @ci-robot 
 
PR sync from: Yu Liao <liaoyu15@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/XKPFNF7N4I4FYRR4NJ3Y7WPUXH46F6VJ/ 
 
https://gitee.com/src-openeuler/kernel/issues/I9FNFO 
 
Link:https://gitee.com/openeuler/kernel/pulls/6642

 

Reviewed-by: Liu YongQiang <liuyongqiang13@huawei.com>
Reviewed-by: Yang Yingliang <yangyingliang@huawei.com>
Reviewed-by: Xie XiuQi <xiexiuqi@huawei.com>
Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>