leds: el15203000: Make error handling more robust

It's easy to miss necessary clean up, e.g. firmware node reference counting,
during error path in ->probe(). Make it more robust by moving to a single
point of return.

Signed-off-by: Andy Shevchenko <[e-mail]>
Signed-off-by: Pavel Machek <[e-mail]>

drivers/leds/leds-el15203000.c

···
 		ret = fwnode_property_read_u32(child, "reg", &led->reg);
 		if (ret) {
 			dev_err(priv->dev, "LED without ID number");
-			fwnode_handle_put(child);
-
-			break;
+			goto err_child_out;
 		}
 
 		if (led->reg > U8_MAX) {
 			dev_err(priv->dev, "LED value %d is invalid", led->reg);
-			fwnode_handle_put(child);
-
-			return -EINVAL;
+			ret = -EINVAL;
+			goto err_child_out;
 		}
 
 		led->priv			  = priv;
···
 			dev_err(priv->dev,
 				"failed to register LED device %s, err %d",
 				led->ldev.name, ret);
-			fwnode_handle_put(child);
-
-			break;
+			goto err_child_out;
 		}
 
 		led++;
 	}
 
+	return 0;
+
+err_child_out:
+	fwnode_handle_put(child);
 	return ret;
 }