iio: amplifiers: hmc425a: 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 <[e-mail]>
Reviewed-by: Andy Shevchenko <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jonathan Cameron <[e-mail]>

drivers/iio/amplifiers/hmc425a.c

···
 	st->gain = st->chip_info->default_gain;
 
 	st->gpios = devm_gpiod_get_array(&pdev->dev, "ctrl", GPIOD_OUT_LOW);
-	if (IS_ERR(st->gpios)) {
-		ret = PTR_ERR(st->gpios);
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "failed to get gpios\n");
-		return ret;
-	}
+	if (IS_ERR(st->gpios))
+		return dev_err_probe(&pdev->dev, PTR_ERR(st->gpios),
+				     "failed to get gpios\n");
 
 	if (st->gpios->ndescs != st->chip_info->num_gpios) {
 		dev_err(&pdev->dev, "%d GPIOs needed to operate\n",