[PATCH] Btrfs: Fix an assert statement in __btrfs_map_block()

[Dan Carpenter]

The btrfs_get_chunk_map() never returns NULL, it returns error pointers.

Fixes: 89b798ad1b42 ("btrfs: Use btrfs_get_io_geometry appropriately")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
 fs/btrfs/volumes.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 6edd1d57e530..e69d135c7d3c 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -5818,7 +5818,7 @@ static int __btrfs_map_block(struct btrfs_fs_info 
*fs_info,
                return ret;
 
        em = btrfs_get_chunk_map(fs_info, logical, *length);
-       ASSERT(em);
+       ASSERT(!IS_ERR(em));
        map = em->map_lookup;
 
        *length = geom.len;
-- 
2.20.1