[PATCH] ovl: properly print correct variable

[Antonio Quartulli <antonio@mandelbit.com>]

In case of ovl_lookup_temp() failure, we currently print `err`
which is actually not initialized at all.

Instead, properly print PTR_ERR(whiteout) which is where the
actual error really is.

Address-Coverity-ID: 1647983 ("Uninitialized variables  (UNINIT)")
Fixes: 8afa0a7367138 ("ovl: narrow locking in ovl_whiteout()")
Signed-off-by: Antonio Quartulli <antonio@mandelbit.com>
---
 fs/overlayfs/dir.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/overlayfs/dir.c b/fs/overlayfs/dir.c
index 30619777f0f6..70b8687dc45e 100644
--- a/fs/overlayfs/dir.c
+++ b/fs/overlayfs/dir.c
@@ -117,8 +117,9 @@ static struct dentry *ovl_whiteout(struct ovl_fs *ofs)
 		if (!IS_ERR(whiteout))
 			return whiteout;
 		if (PTR_ERR(whiteout) != -EMLINK) {
-			pr_warn("Failed to link whiteout - disabling whiteout inode sharing(nlink=%u, err=%i)\n",
-				ofs->whiteout->d_inode->i_nlink, err);
+			pr_warn("Failed to link whiteout - disabling whiteout inode sharing(nlink=%u, err=%lu)\n",
+				ofs->whiteout->d_inode->i_nlink,
+				PTR_ERR(whiteout));
 			ofs->no_shared_whiteout = true;
 		}
 	}
-- 
2.49.1