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>
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 9d51e27..a8755df 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -2415,8 +2415,10 @@
 							 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;
 }