drm: Fix use-after-free read in drm_getunique()
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 v5.4.126 by commit b246b4c70c1250e7814f409b243000f9c0bf79a3. For more details please see the references link.