mfd: madera: 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.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/madera-core.c

@@ -369,19 +369,14 @@ EXPORT_SYMBOL_GPL(madera_of_match);
 static int madera_get_reset_gpio(struct madera *madera)
 {
 	struct gpio_desc *reset;
-	int ret;
 
 	if (madera->pdata.reset)
 		return 0;
 
 	reset = devm_gpiod_get_optional(madera->dev, "reset", GPIOD_OUT_LOW);
-	if (IS_ERR(reset)) {
-		ret = PTR_ERR(reset);
-		if (ret != -EPROBE_DEFER)
-			dev_err(madera->dev, "Failed to request /RESET: %d\n",
-				ret);
-		return ret;
-	}
+	if (IS_ERR(reset))
+		return dev_err_probe(madera->dev, PTR_ERR(reset),
+				"Failed to request /RESET");
 
 	/*
 	 * A hard reset is needed for full reset of the chip. We allow running