[PATCH 3/3] ubifs: mount_ubifs: Release authentication resource in error handling path

[Zhihao Cheng]

Release the authentication related resource in some error handling
branches in mount_ubifs().

Signed-off-by: Zhihao Cheng <chengzhihao1@xxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>  # 4.20+
Fixes: d8a22773a12c6d7 ("ubifs: Enable authentication support")
---
 fs/ubifs/super.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 9796f5df2f7f..732218ef6656 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1331,7 +1331,7 @@ static int mount_ubifs(struct ubifs_info *c)
 
 	err = ubifs_read_superblock(c);
 	if (err)
-		goto out_free;
+		goto out_auth;
 
 	c->probing = 0;
 
@@ -1343,18 +1343,18 @@ static int mount_ubifs(struct ubifs_info *c)
 		ubifs_err(c, "'compressor \"%s\" is not compiled in",
 			  ubifs_compr_name(c, c->default_compr));
 		err = -ENOTSUPP;
-		goto out_free;
+		goto out_auth;
 	}
 
 	err = init_constants_sb(c);
 	if (err)
-		goto out_free;
+		goto out_auth;
 
 	sz = ALIGN(c->max_idx_node_sz, c->min_io_size) * 2;
 	c->cbuf = kmalloc(sz, GFP_NOFS);
 	if (!c->cbuf) {
 		err = -ENOMEM;
-		goto out_free;
+		goto out_auth;
 	}
 
 	err = alloc_wbufs(c);
@@ -1629,6 +1629,8 @@ static int mount_ubifs(struct ubifs_info *c)
 	free_wbufs(c);
 out_cbuf:
 	kfree(c->cbuf);
+out_auth:
+	ubifs_exit_authentication(c);
 out_free:
 	kfree(c->write_reserve_buf);
 	kfree(c->bu.buf);
-- 
2.25.4