!9322 drm/amd/display: Fix potential index out of bounds in color transformation function

Merge Pull Request from: @ci-robot 
 
PR sync from: Cai Xinchen <caixinchen1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/E7IW27DO6MGVSCVXFXGWPCJIC3OAZ5YD/ 
 
https://gitee.com/src-openeuler/kernel/issues/IA6S5J 
 
Link:https://gitee.com/openeuler/kernel/pulls/9322

 

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