kernel: drm/amdgpu: fix calltrace warning in amddrm_buddy_fini

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix calltrace warning in amddrmbuddyfini The following call trace is observed when removing the amdgpu driver, which is caused by that BOs allocated for psp are not freed until removing. 61811.450562 RIP:...