mac80211: clean up ieee80211_stop_tx_ba_session

There's no sense in letting anything but internal
mac80211 functions set the initiator to anything
but WLAN_BACK_INITIATOR, since WLAN_BACK_RECIPIENT
is only valid when we have received a frame from
the peer, which we react to directly in mac80211.

The debugfs code I recently added got this wrong
as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
index cf4a95b..40933a5 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn-rs.c
@@ -313,8 +313,7 @@
 			 */
 			IWL_DEBUG_HT(priv, "Fail start Tx agg on tid: %d\n",
 				tid);
-			ieee80211_stop_tx_ba_session(sta, tid,
-						WLAN_BACK_INITIATOR);
+			ieee80211_stop_tx_ba_session(sta, tid);
 		}
 	} else
 		IWL_ERR(priv, "Fail finding valid aggregation tid: %d\n", tid);