Btrfs: Compile warning fixup in volume.c

Signed-off-by: Chris Mason <chris.mason@oracle.com>

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 6d8dd4438c76ca388109d5b83ebc6018a6f21c8b..b38187573108e4263c02552c62746a790a2308a3 100644 (file)
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -547,7 +547,7 @@ int btrfs_add_device(struct btrfs_trans_handle *trans,
        struct extent_buffer *leaf;
        struct btrfs_key key;
        unsigned long ptr;
-       u64 free_devid;
+       u64 free_devid = 0;
 
        root = root->fs_info->chunk_root;