drm/amdgpu: Move mutexinit(&smu->messagelock) to smuearlyinit()
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 v5.18.3 by commit f81fb5e6c6634931d183de61c9fecc5e203d3124. For more details please see the references link.