!10081 drm/amdgpu: fix UBSAN warning in kv_dpm.c

Merge Pull Request from: @ci-robot 
 
PR sync from: Yang Yingliang <yangyingliang@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/34FG2CY2F5LQAVU737YVYGBDA6D6ZLT6/ 
 
https://gitee.com/src-openeuler/kernel/issues/IACQY7 
 
Link:https://gitee.com/openeuler/kernel/pulls/10081

 

Reviewed-by: Xiongfeng Wang <wangxiongfeng2@huawei.com>
Reviewed-by: Zhang Changzhong <zhangchangzhong@huawei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com>