mac80211: remove unneeded ieee80211_run_deferred_scan()

Ilan pointed out to me that ieee80211_start_next_roc()
already calls ieee80211_run_deferred_scan() if the list
of ROC items is empty, so there's no need to call it
again after calling ieee80211_start_next_roc().

Reported-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

net/mac80211/cfg.c

@@ -2330,7 +2330,6 @@ static int ieee80211_cancel_roc(struct ieee80211_local *local,
 
 		list_del(&found->list);
 
-		ieee80211_run_deferred_scan(local);
 		ieee80211_start_next_roc(local);
 		mutex_unlock(&local->mtx);
 

net/mac80211/offchannel.c

@@ -379,7 +379,6 @@ void ieee80211_sw_roc_work(struct work_struct *work)
 		ieee80211_recalc_idle(local);
 
 		ieee80211_start_next_roc(local);
-		ieee80211_run_deferred_scan(local);
 	}
 
  out_unlock:
@@ -410,9 +409,6 @@ static void ieee80211_hw_roc_done(struct work_struct *work)
 	/* if there's another roc, start it now */
 	ieee80211_start_next_roc(local);
 
-	/* or scan maybe */
-	ieee80211_run_deferred_scan(local);
-
  out_unlock:
 	mutex_unlock(&local->mtx);
 }
@@ -455,7 +451,6 @@ void ieee80211_roc_purge(struct ieee80211_sub_if_data *sdata)
 	}
 
 	ieee80211_start_next_roc(local);
-	ieee80211_run_deferred_scan(local);
 	mutex_unlock(&local->mtx);
 
 	list_for_each_entry_safe(roc, tmp, &tmp_list, list) {