regulator: cros-ec-regulator: Fix double free of desc->name.

The desc->name field is allocated with devm_kstrdup, but is also kfreed
on the error path, causing it to be double freed. Remove the kfree on
the error path.

Fixes: 8d9f8d5 ("regulator: Add driver for cros-ec-regulator")
Signed-off-by: Pi-Hsun Shih <pihsun@chromium.org>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20200728091909.2009771-1-pihsun@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: peter50216

drivers/regulator/cros-ec-regulator.c

@@ -222,18 +222,13 @@ static int cros_ec_regulator_probe(struct platform_device *pdev)
 
 	drvdata->dev = devm_regulator_register(dev, &drvdata->desc, &cfg);
 	if (IS_ERR(drvdata->dev)) {
-		ret = PTR_ERR(drvdata->dev);
 		dev_err(&pdev->dev, "Failed to register regulator: %d\n", ret);
-		goto free_name;
+		return PTR_ERR(drvdata->dev);
 	}
 
 	platform_set_drvdata(pdev, drvdata);
 
 	return 0;
-
-free_name:
-	kfree(desc->name);
-	return ret;
 }
 
 static const struct of_device_id regulator_cros_ec_of_match[] = {