CVE-2023-53816 drm/amdkfd: fix potential kgd_mem UAFs

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: fix potential kgdmem UAFs kgdmem pointers returned by kfdprocessdevicetranslatehandle are only guaranteed to be valid while p-mutex is held. As soon as the mutex is unlocked, another thread can free the BO...