backlight: l4f00242t03: Simplify with dev_err_probe()

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and also it prints the error value.

Reviewed-by: Daniel Thompson <[email protected]>
Signed-off-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: krzk

drivers/video/backlight/l4f00242t03.c

@@ -179,34 +179,28 @@ static int l4f00242t03_probe(struct spi_device *spi)
 	priv->spi = spi;
 
 	priv->reset = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_HIGH);
-	if (IS_ERR(priv->reset)) {
-		dev_err(&spi->dev,
-			"Unable to get the lcd l4f00242t03 reset gpio.\n");
-		return PTR_ERR(priv->reset);
-	}
+	if (IS_ERR(priv->reset))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->reset),
+				     "Unable to get the lcd l4f00242t03 reset gpio.\n");
 	gpiod_set_consumer_name(priv->reset, "lcd l4f00242t03 reset");
 
 	priv->enable = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW);
-	if (IS_ERR(priv->enable)) {
-		dev_err(&spi->dev,
-			"Unable to get the lcd l4f00242t03 data en gpio.\n");
-		return PTR_ERR(priv->enable);
-	}
+	if (IS_ERR(priv->enable))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->enable),
+				     "Unable to get the lcd l4f00242t03 data en gpio.\n");
 	gpiod_set_consumer_name(priv->enable, "lcd l4f00242t03 data enable");
 
 	priv->io_reg = devm_regulator_get(&spi->dev, "vdd");
-	if (IS_ERR(priv->io_reg)) {
-		dev_err(&spi->dev, "%s: Unable to get the IO regulator\n",
-		       __func__);
-		return PTR_ERR(priv->io_reg);
-	}
+	if (IS_ERR(priv->io_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->io_reg),
+				     "%s: Unable to get the IO regulator\n",
+				     __func__);
 
 	priv->core_reg = devm_regulator_get(&spi->dev, "vcore");
-	if (IS_ERR(priv->core_reg)) {
-		dev_err(&spi->dev, "%s: Unable to get the core regulator\n",
-		       __func__);
-		return PTR_ERR(priv->core_reg);
-	}
+	if (IS_ERR(priv->core_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->core_reg),
+				     "%s: Unable to get the core regulator\n",
+				     __func__);
 
 	priv->ld = devm_lcd_device_register(&spi->dev, "l4f00242t03", &spi->dev,
 					priv, &l4f_ops);