[PATCH] btrfs: Fix an error handling path in btrfs_defrag_leaves()

[Christophe JAILLET]

All error handling paths end to 'out', except this memory allocation
failure.

This is spurious. So branch to the error handling path also in this case.
It will add a call to:
	memset(&root->defrag_progress, 0,
	       sizeof(root->defrag_progress));

Fixes: 6702ed490ca0 ("Btrfs: Add run time btree defrag, and an ioctl to force btree defrag")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
This patch is completely speculative.

Review with care !
---
 fs/btrfs/defrag.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/defrag.c b/fs/btrfs/defrag.c
index 0a3c261b69c9..d81b764a7644 100644
--- a/fs/btrfs/defrag.c
+++ b/fs/btrfs/defrag.c
@@ -358,8 +358,10 @@ int btrfs_defrag_leaves(struct btrfs_trans_handle *trans,
 		goto out;
 
 	path = btrfs_alloc_path();
-	if (!path)
-		return -ENOMEM;
+	if (!path) {
+		ret = -ENOMEM;
+		goto out;
+	}
 
 	level = btrfs_header_level(root->node);
 
-- 
2.34.1