After launching mesh discovery in tx path, reference count was not being
decremented.  This was preventing module unload.
Signed-off-by: NBrian Cavagnolo <brian@cozybit.com>
Signed-off-by: NAndrey Yurovsky <andrey@cozybit.com>
Acked-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>