CVE-2022-48633 drm/gma500: Fix WARN_ON(lock->magic != lock) error

In the Linux kernel, the following vulnerability has been resolved: drm/gma500: Fix WARNONlock-magic != lock error psbgemunpin calls dmaresvlock but the underlying wwmutex gets destroyed by drmgemobjectrelease move the drmgemobjectrelease call in psbgemfreeobject to after the unpin to fix the bel...