[PATCH 1/5] mm, swap: Fix memory leak in setup_clusters() error path

[Youngjun Park <youngjun.park@lge.com>]

Some error path neglects to free the allocated 'cluster_info',
causing a memory leak.

Change the error jumps to the 'err_free' label to ensure proper
cleanup.

Fixes: 07adc4cf1ecd ("mm, swap: implement dynamic allocation of swap table")
Signed-off-by: Youngjun Park <youngjun.park@lge.com>
---
 mm/swapfile.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/swapfile.c b/mm/swapfile.c
index c35bb8593f50..6dc0e7a738bc 100644
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -3339,7 +3339,7 @@ static struct swap_cluster_info *setup_clusters(struct swap_info_struct *si,
 	 */
 	err = swap_cluster_setup_bad_slot(cluster_info, 0);
 	if (err)
-		goto err;
+		goto err_free;
 	for (i = 0; i < swap_header->info.nr_badpages; i++) {
 		unsigned int page_nr = swap_header->info.badpages[i];
 
@@ -3347,12 +3347,12 @@ static struct swap_cluster_info *setup_clusters(struct swap_info_struct *si,
 			continue;
 		err = swap_cluster_setup_bad_slot(cluster_info, page_nr);
 		if (err)
-			goto err;
+			goto err_free;
 	}
 	for (i = maxpages; i < round_up(maxpages, SWAPFILE_CLUSTER); i++) {
 		err = swap_cluster_setup_bad_slot(cluster_info, i);
 		if (err)
-			goto err;
+			goto err_free;
 	}
 
 	INIT_LIST_HEAD(&si->free_clusters);
-- 
2.34.1