[PATCH 2/2] btrfs: fix error return on alloc fail in clone_fs_devices

[Anand Jain <anand.jain@oracle.com>]

Fix the fake ENOMEM return error code to the actual error in
clone_fs_devices().

Signed-off-by: Anand Jain <anand.jain@oracle.com>
---
 fs/btrfs/volumes.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 36aa5f79fb6c..8d72098ccb4b 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1115,6 +1115,7 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig)
 	struct btrfs_fs_devices *fs_devices;
 	struct btrfs_device *device;
 	struct btrfs_device *orig_dev;
+	int ret = 0;
 
 	fs_devices = alloc_fs_devices(orig->fsid, NULL);
 	if (IS_ERR(fs_devices))
@@ -1128,8 +1129,10 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig)
 
 		device = btrfs_alloc_device(NULL, &orig_dev->devid,
 					    orig_dev->uuid);
-		if (IS_ERR(device))
+		if (IS_ERR(device)) {
+			ret = PTR_ERR(device);
 			goto error;
+		}
 
 		/*
 		 * This is ok to do without rcu read locked because we hold the
@@ -1140,6 +1143,7 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig)
 					GFP_KERNEL);
 			if (!name) {
 				btrfs_free_device(device);
+				ret = -ENOMEM;
 				goto error;
 			}
 			rcu_assign_pointer(device->name, name);
@@ -1154,7 +1158,7 @@ static struct btrfs_fs_devices *clone_fs_devices(struct btrfs_fs_devices *orig)
 error:
 	mutex_unlock(&orig->device_list_mutex);
 	free_fs_devices(fs_devices);
-	return ERR_PTR(-ENOMEM);
+	return ERR_PTR(ret);
 }
 
 /*
-- 
2.21.0 (Apple Git-120)