btrfs: remove redundant value assignment at btrfs_add_extent_mapping()

At btrfs_add_extent_mapping(), in case add_extent_mapping() returned
-EEXIST, it's pointless to assign 0 to 'ret' since we will assign a value
to it shortly after, without 'ret' being used before that. So remove that
pointless assignment.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 18a5c4332ed6a800271105654737a600e81b2743..a3d69c943eec16c9b1c1b05148edb4b9e4998c62 100644 (file)
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -586,8 +586,6 @@ int btrfs_add_extent_mapping(struct btrfs_fs_info *fs_info,
        if (ret == -EEXIST) {
                struct extent_map *existing;
 
-               ret = 0;
-
                existing = search_extent_mapping(em_tree, start, len);
 
                trace_btrfs_handle_em_exist(fs_info, existing, em, start, len);