The set_connector_edid() function returns a bogus 0, performing the
check on the connector->funcs->fill_modes() result internally. Make the
function pass the fill_modes()'s return value to the caller and move
corresponding checks to the caller site.
Reviewed-by: Maxime Ripard <mripard@xxxxxxxxxx>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>