regulator: virtual: use dev_err_probe()

Use dev_err_probe() to avoid printing spurious warnings on
probe deferral.

Signed-off-by: Vincent Whitchurch <vincent.whitchurch@axis.com>
Link: https://lore.kernel.org/r/20220301111831.3742383-2-vincent.whitchurch@axis.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: vwax

drivers/regulator/virtual.c

@@ -295,12 +295,10 @@ static int regulator_virtual_probe(struct platform_device *pdev)
 	mutex_init(&drvdata->lock);
 
 	drvdata->regulator = devm_regulator_get(&pdev->dev, reg_id);
-	if (IS_ERR(drvdata->regulator)) {
-		ret = PTR_ERR(drvdata->regulator);
-		dev_err(&pdev->dev, "Failed to obtain supply '%s': %d\n",
-			reg_id, ret);
-		return ret;
-	}
+	if (IS_ERR(drvdata->regulator))
+		return dev_err_probe(&pdev->dev, PTR_ERR(drvdata->regulator),
+				     "Failed to obtain supply '%s'\n",
+				     reg_id);
 
 	ret = sysfs_create_group(&pdev->dev.kobj,
 				 &regulator_virtual_attr_group);