drm/amdgpu: correct condition check for psp rlc autoload

Otherwise non-autoload case will go into the wrong routine and fail.

Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Le Ma <le.ma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>