mac80211: Reset assoc_scan_tries after an unsuccessful scan run

Trying to associate with a non-existent SSID stops the
state machine after the first run. Subsequent association
requests fail to start the scan engine. Fix this by resetting
assoc_scan_tries to zero after completing a scan run.
Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

net/mac80211/mlme.c

@@ -2415,9 +2415,11 @@ static int ieee80211_sta_config_auth(struct ieee80211_sub_if_data *sdata,
 							 ifsta->ssid_len);
 			ifsta->state = IEEE80211_STA_MLME_AUTHENTICATE;
 			set_bit(IEEE80211_STA_REQ_AUTH, &ifsta->request);
-		} else
+		} else {
+			ifsta->assoc_scan_tries = 0;
 			ifsta->state = IEEE80211_STA_MLME_DISABLED;
 		}
+	}
 	return -1;
 }