diff --git a/drivers/gpu/drm/rockchip/rk628/rk628_hdmi.c b/drivers/gpu/drm/rockchip/rk628/rk628_hdmi.c
index edf7e71ea23b..29b5fcb2d3bc 100644
--- a/drivers/gpu/drm/rockchip/rk628/rk628_hdmi.c
+++ b/drivers/gpu/drm/rockchip/rk628/rk628_hdmi.c
@@ -1564,6 +1564,7 @@ static int rk628_hdmi_probe(struct platform_device *pdev)
 	hdmi->extcon = devm_extcon_dev_allocate(hdmi->dev, rk628_hdmi_cable);
 	if (IS_ERR(hdmi->extcon)) {
 		dev_err(hdmi->dev, "allocate extcon failed\n");
+		ret = PTR_ERR(hdmi->extcon);
 		goto fail;
 	}