Input: twl6040-vibra - use cleanup facility for device_node

Use the '__free(device_node)' macro to simplify the code and error
handling. This makes the error handling more robust by ensuring that the
device node is always freed.

Signed-off-by: Javier Carrasco <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

Author: javiercarrascocruz

drivers/input/misc/twl6040-vibra.c

@@ -229,22 +229,20 @@ static DEFINE_SIMPLE_DEV_PM_OPS(twl6040_vibra_pm_ops,
 static int twl6040_vibra_probe(struct platform_device *pdev)
 {
 	struct device *twl6040_core_dev = pdev->dev.parent;
-	struct device_node *twl6040_core_node;
 	struct vibra_info *info;
 	int vddvibl_uV = 0;
 	int vddvibr_uV = 0;
 	int error;
 
-	twl6040_core_node = of_get_child_by_name(twl6040_core_dev->of_node,
-						 "vibra");
+	struct device_node *twl6040_core_node __free(device_node) =
+		of_get_child_by_name(twl6040_core_dev->of_node, "vibra");
 	if (!twl6040_core_node) {
 		dev_err(&pdev->dev, "parent of node is missing?\n");
 		return -EINVAL;
 	}
 
 	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
 	if (!info) {
-		of_node_put(twl6040_core_node);
 		dev_err(&pdev->dev, "couldn't allocate memory\n");
 		return -ENOMEM;
 	}
@@ -264,8 +262,6 @@ static int twl6040_vibra_probe(struct platform_device *pdev)
 	of_property_read_u32(twl6040_core_node, "ti,vddvibl-uV", &vddvibl_uV);
 	of_property_read_u32(twl6040_core_node, "ti,vddvibr-uV", &vddvibr_uV);
 
-	of_node_put(twl6040_core_node);
-
 	if ((!info->vibldrv_res && !info->viblmotor_res) ||
 	    (!info->vibrdrv_res && !info->vibrmotor_res)) {
 		dev_err(info->dev, "invalid vibra driver/motor resistance\n");