[PATCH] drm/sun4i: Add error handling in sun4i_layer_init_one()

[liuhaoran]

This patch adds error-handling for the drm_plane_create_alpha_property()
and drm_plane_create_zpos_property() inside the dw_hdmi_imx_probe().

Signed-off-by: liuhaoran <liuhaoran14 at 163.com>
---
 drivers/gpu/drm/sun4i/sun4i_layer.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_layer.c b/drivers/gpu/drm/sun4i/sun4i_layer.c
index 98f3176366c0..a3343afb7935 100644
--- a/drivers/gpu/drm/sun4i/sun4i_layer.c
+++ b/drivers/gpu/drm/sun4i/sun4i_layer.c
@@ -224,9 +224,22 @@ static struct sun4i_layer *sun4i_layer_init_one(struct drm_device *drm,
 	drm_plane_helper_add(&layer->plane,
 			     &sun4i_backend_layer_helper_funcs);
 
-	drm_plane_create_alpha_property(&layer->plane);
-	drm_plane_create_zpos_property(&layer->plane, layer->id,
-				       0, SUN4I_BACKEND_NUM_LAYERS - 1);
+	ret = drm_plane_create_alpha_property(&layer->plane);
+
+	if (ret) {
+		dev_err(drm->dev, "Failed to install alpha property,
+			rc = %d\n", ret);
+		return ERR_PTR(ret);
+	}
+
+	ret = drm_plane_create_zpos_property(&layer->plane, layer->id, 0,
+					     SUN4I_BACKEND_NUM_LAYERS - 1);
+
+	if (ret) {
+		dev_err(drm->dev, "Failed to install zpos property,
+			rc = %d\n", ret);
+		return ERR_PTR(ret);
+	}
 
 	return layer;
 }
-- 
2.17.1