staging: brcm80211: remove duplicated code from brcmf_init_iscan

Part of the code in brcmf_init_scan was identical to the code in
brcmf_invoke_iscan and has been replaced by a call to it.
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Roland Vossen <rvossen@broadcom.com>
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/brcm80211/brcmfmac/wl_cfg80211.c

@@ -3343,7 +3343,6 @@ static void brcmf_iscan_timer(unsigned long data)
 static s32 brcmf_invoke_iscan(struct brcmf_cfg80211_priv *cfg_priv)
 {
 	struct brcmf_cfg80211_iscan_ctrl *iscan = cfg_to_iscan(cfg_priv);
-	int err = 0;
 
 	if (cfg_priv->iscan_on && !iscan->tsk) {
 		iscan->state = WL_ISCAN_STATE_IDLE;
@@ -3356,7 +3355,7 @@ static s32 brcmf_invoke_iscan(struct brcmf_cfg80211_priv *cfg_priv)
 		}
 	}
 
-	return err;
+	return 0;
 }
 
 static void brcmf_init_iscan_eloop(struct brcmf_cfg80211_iscan_eloop *el)
@@ -3376,20 +3375,14 @@ static s32 brcmf_init_iscan(struct brcmf_cfg80211_priv *cfg_priv)
 
 	if (cfg_priv->iscan_on) {
 		iscan->dev = cfg_to_ndev(cfg_priv);
-		iscan->state = WL_ISCAN_STATE_IDLE;
 		brcmf_init_iscan_eloop(&iscan->el);
 		iscan->timer_ms = WL_ISCAN_TIMER_INTERVAL_MS;
 		init_timer(&iscan->timer);
 		iscan->timer.data = (unsigned long) iscan;
 		iscan->timer.function = brcmf_iscan_timer;
-		sema_init(&iscan->sync, 0);
-		iscan->tsk = kthread_run(brcmf_iscan_thread, iscan, "wl_iscan");
-		if (IS_ERR(iscan->tsk)) {
-			WL_ERR("Could not create iscan thread\n");
-			iscan->tsk = NULL;
-			return -ENOMEM;
-		}
-		iscan->data = cfg_priv;
+		err = brcmf_invoke_iscan(cfg_priv);
+		if (!err)
+			iscan->data = cfg_priv;
 	}
 
 	return err;