spi: spi-s3c64xx.c: Remove of_node_put for auto cleanup

Use the scope based of_node_put() cleanup in s3c64xx_spi_csinfo to
automatically release the device node with the __free() cleanup handler
Initialize data_np at the point of declaration for clarity of scope.

This change reduces the risk of memory leaks and simplifies the code by
removing manual node put call.

Suggested-by: Julia Lawall <[email protected]>
Signed-off-by: Shivani Gupta <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: shivanigupta-dev

drivers/spi/spi-s3c64xx.c

@@ -950,7 +950,7 @@ static struct s3c64xx_spi_csinfo *s3c64xx_get_target_ctrldata(
 				struct spi_device *spi)
 {
 	struct s3c64xx_spi_csinfo *cs;
-	struct device_node *target_np, *data_np = NULL;
+	struct device_node *target_np;
 	u32 fb_delay = 0;
 
 	target_np = spi->dev.of_node;
@@ -963,15 +963,15 @@ static struct s3c64xx_spi_csinfo *s3c64xx_get_target_ctrldata(
 	if (!cs)
 		return ERR_PTR(-ENOMEM);
 
-	data_np = of_get_child_by_name(target_np, "controller-data");
+	struct device_node *data_np __free(device_node) =
+			of_get_child_by_name(target_np, "controller-data");
 	if (!data_np) {
 		dev_info(&spi->dev, "feedback delay set to default (0)\n");
 		return cs;
 	}
 
 	of_property_read_u32(data_np, "samsung,spi-feedback-delay", &fb_delay);
 	cs->fb_delay = fb_delay;
-	of_node_put(data_np);
 	return cs;
 }