diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 7f1a4e55cda1..c33a39065704 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -4922,7 +4922,7 @@ static void intel_write_dp_sdp(struct intel_encoder *encoder,
 		break;
 	default:
 		MISSING_CASE(type);
-		break;
+		return;
 	}
 
 	if (drm_WARN_ON(&dev_priv->drm, len < 0))