ath9k: Unlock sc->mutex on error path

An error path in ath9k_add_interface() did not unlock the sc->mutex and
could leave the driver in quite unresponsive state.

Signed-off-by: Jouni Malinen <jouni.malinen@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c
index 1e3824215ac9..f5f5739a7a4b 100644
--- a/drivers/net/wireless/ath9k/main.c
+++ b/drivers/net/wireless/ath9k/main.c
@@ -2145,6 +2145,7 @@ static int ath9k_add_interface(struct ieee80211_hw *hw,
         default:
                 DPRINTF(sc, ATH_DBG_FATAL,
                         "Interface type %d not yet supported\n", conf->type);
+                mutex_unlock(&sc->mutex);
                 return -EOPNOTSUPP;
         }