drm/i915/sdvo: ignore returned broken edid on intel_sdvo_tmds_sink_detect
If drm_edid_raw returned NULL on error don't try accessing anything behind that NULL Signed-off-by: NJuha-Pekka Heikkila <juhapekka.heikkila@gmail.com> Reviewed-by: NJani Nikula <jani.nikula@intel.com> Signed-off-by: NJouni Högander <jouni.hogander@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20230803143530.27601-1-juhapekka.heikkila@gmail.com
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