mt76x0: usb: stop cal/mac workqueues at hw stop

Stop mac and calibration work stopping the hw even if the
device has been removed

Fixes: b11e1969 ("mt76x0: add ieee80211_ops ops pointer to
mt76x0_alloc_device signature")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x0/usb.c

@@ -86,14 +86,14 @@ static void mt76x0u_cleanup(struct mt76x0_dev *dev)
 
 static void mt76x0u_mac_stop(struct mt76x0_dev *dev)
 {
-	if (test_bit(MT76_REMOVED, &dev->mt76.state))
-		return;
-
 	clear_bit(MT76_STATE_RUNNING, &dev->mt76.state);
 	cancel_delayed_work_sync(&dev->cal_work);
 	cancel_delayed_work_sync(&dev->mac_work);
 	mt76u_stop_stat_wk(&dev->mt76);
 
+	if (test_bit(MT76_REMOVED, &dev->mt76.state))
+		return;
+
 	mt76_clear(dev, MT_BEACON_TIME_CFG, MT_BEACON_TIME_CFG_TIMER_EN |
 		   MT_BEACON_TIME_CFG_SYNC_MODE | MT_BEACON_TIME_CFG_TBTT_EN |
 		   MT_BEACON_TIME_CFG_BEACON_TX);