btrfs: rename err and ret to ret in build_backref_tree()

Code style fix in the function build_backref_tree().  Drop the ret
initialization 0, as we don't need it.

Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Anand Jain 2024-03-19 20:25:22 +05:30 • committed by David Sterba
commit 2daca1e419