drm/radeon: Fix PCI device refcount leak in radeonatrmget_bios()
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 v4.9.337 by commit 6f28c7f67af4ef9bca580ab67ae2d4511797af56, it was introduced in version v3.15 by commit d8ade3526b2aa0505132c404c05a38b73ea15490. For more details please see the references link.