[PATCH] drm/panel: ili9881c: 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-ilitek-ili9881c.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c 
b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
index 0145129d7c66..f7520231abc3 100644
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
@@ -653,16 +653,14 @@ static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
                       DRM_MODE_CONNECTOR_DSI);
 
        ctx->power = devm_regulator_get(&dsi->dev, "power");
-       if (IS_ERR(ctx->power)) {
-               dev_err(&dsi->dev, "Couldn't get our power regulator\n");
-               return PTR_ERR(ctx->power);
-       }
+       if (IS_ERR(ctx->power))
+               return dev_err_probe(&dsi->dev, PTR_ERR(ctx->power),
+                                    "Couldn't get our power regulator\n");
 
        ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
-       if (IS_ERR(ctx->reset)) {
-               dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
-               return PTR_ERR(ctx->reset);
-       }
+       if (IS_ERR(ctx->reset))
+               return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),
+                                    "Couldn't get our reset GPIO\n");
 
        ret = drm_panel_of_backlight(&ctx->panel);
        if (ret)
-- 
2.25.1