drm/amdgpu: reduce redundant uvd context lost warning message

Move the print out of uvd instance loop in amdgpu_uvd_suspend

v2: drop unnecessary brackets
v3: grab ras_intr state once for multiple times use

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