avos 7068dcff87 rtwn: do not start vap when initialization fails
- Start vap(s) (via ieee80211_start_all()) only when initialization
succeeds; stop the first vap otherwise (via ieee80211_stop());
- Do not try to stop a device multiple times
(move (sc->sc_flags & RTWN_RUNNING) check to urtwn_stop_locked()).

Tested by:	kevlo
Reviewed by:	kevlo
Approved by:	adrian (mentor)
Differential Revision:	https://reviews.freebsd.org/D5058
2016-01-26 16:50:59 +00:00
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