drm: remove pointless checks in radeon_state
If these were valid checks, we'd have already oopsed several lines above where we were already dereferencing them. DA: these used to be valid but other changes made them unnecessary. Coverity: 776,777,778 Signed-off-by: NDave Jones <davej@redhat.com> Signed-off-by: NDave Airlie <airlied@linux.ie>
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