drm/amdkfd: Check for potential null return of kmalloc_array()
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 v4.9.311 by commit 32cf90a521dcc0f136db7ee5ba32bfe5f79e460e. For more details please see the references link.