PM / devfreq: event: Call of_node_put() only once in devfreq_event_get_edev_by_phandle()

An of_node_put(node) call was immediately used after a null pointer check
for the local variable “edev” at the end of this function implementation.
Thus call such a function only once instead directly before the check.

This issue was transformed by using the Coccinelle software.

Link: https://lore.kernel.org/lkml/[e-mail]/
Signed-off-by: Markus Elfring <[e-mail]>
Signed-off-by: Chanwoo Choi <[e-mail]>

drivers/devfreq/devfreq-event.c

···
 	edev = NULL;
 out:
 	mutex_unlock(&devfreq_event_list_lock);
-
-	if (!edev) {
-		of_node_put(node);
-		return ERR_PTR(-ENODEV);
-	}
-
 	of_node_put(node);
+	if (!edev)
+		return ERR_PTR(-ENODEV);
 
 	return edev;
 }