UVI-2021-1000585 drm/amd/amdgpu: fix refcount leak

drm/amd/amdgpu: fix refcount leak This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.10.42 by commit 9fdb8ed37a3a44f9c49372b69f87fd5f61cb3240, i...