[PATCH] drm/panel: ej030na: Make use of the helper function dev_err_probe()

[Cai Huoqing]

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoq...@baidu.com>
---
 drivers/gpu/drm/panel/panel-innolux-ej030na.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-innolux-ej030na.c 
b/drivers/gpu/drm/panel/panel-innolux-ej030na.c
index 34b98f70bd22..c558de3f99be 100644
--- a/drivers/gpu/drm/panel/panel-innolux-ej030na.c
+++ b/drivers/gpu/drm/panel/panel-innolux-ej030na.c
@@ -198,16 +198,14 @@ static int ej030na_probe(struct spi_device *spi)
                return -EINVAL;
 
        priv->supply = devm_regulator_get(dev, "power");
-       if (IS_ERR(priv->supply)) {
-               dev_err(dev, "Failed to get power supply\n");
-               return PTR_ERR(priv->supply);
-       }
+       if (IS_ERR(priv->supply))
+               return dev_err_probe(dev, PTR_ERR(priv->supply),
+                                    "Failed to get power supply\n");
 
        priv->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
-       if (IS_ERR(priv->reset_gpio)) {
-               dev_err(dev, "Failed to get reset GPIO\n");
-               return PTR_ERR(priv->reset_gpio);
-       }
+       if (IS_ERR(priv->reset_gpio))
+               return dev_err_probe(dev, PTR_ERR(priv->reset_gpio),
+                                    "Failed to get reset GPIO\n");
 
        drm_panel_init(&priv->panel, dev, &ej030na_funcs,
                       DRM_MODE_CONNECTOR_DPI);
-- 
2.25.1