[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 <liuhaora...@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