linux-wandboard

Btrfs: fix memory leak in btrfs_parse_early_options()

Don't leak subvol_name string in case multiple subvol= options are
given.  "The lastest option is effective" behavior (consistent with
subvolid= and subvolrootid= options) is preserved.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>