devres: remove unnecessary unlocks in devres_release_group()

There is no need to call spin_unlock_irqrestore() in every conditional
block, as release_nodes() can safely be called with an empty list, in
case we hit the "if else" or "else" case.

We do not use a scoped_guard() here to not unnecessarily change the
indentation level.

Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://patch.msgid.link/20260202235210.55176-8-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>

Author: Danilo Krummrich

drivers/base/devres.c

@@ -712,7 +712,6 @@ int devres_release_group(struct device *dev, void *id)
 	int cnt = 0;
 
 	spin_lock_irqsave(&dev->devres_lock, flags);
-
 	grp = find_group(dev, id);
 	if (grp) {
 		struct list_head *first = &grp->node[0].entry;
@@ -722,20 +721,18 @@ int devres_release_group(struct device *dev, void *id)
 			end = grp->node[1].entry.next;
 
 		cnt = remove_nodes(dev, first, end, &todo);
-		spin_unlock_irqrestore(&dev->devres_lock, flags);
-
-		release_nodes(dev, &todo);
 	} else if (list_empty(&dev->devres_head)) {
 		/*
 		 * dev is probably dying via devres_release_all(): groups
 		 * have already been removed and are on the process of
 		 * being released - don't touch and don't warn.
 		 */
-		spin_unlock_irqrestore(&dev->devres_lock, flags);
 	} else {
 		WARN_ON(1);
-		spin_unlock_irqrestore(&dev->devres_lock, flags);
 	}
+	spin_unlock_irqrestore(&dev->devres_lock, flags);
+
+	release_nodes(dev, &todo);
 
 	return cnt;
 }