GSD-2021-1002552 drm/amd/amdgpu: fix potential memleak

drm/amd/amdgpu: fix potential memleak 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 v5.15.7 by commit 75752ada77e0726327adf68018b9f50ae091baeb...