staging: vt6656: Don't set RCR_MULTICAST or RCR_BROADCAST by default.

mac80211/users control whether multicast is on or off don't enable it by default.

Fixes an issue when multicast/broadcast is always on allowing other beacons through
in power save.

Fixes: db8f37fa ("staging: vt6656: mac80211 conversion: main_usb add functions...")
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Link: https://lore.kernel.org/r/2c24c33d-68c4-f343-bd62-105422418eac@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/main_usb.c

@@ -809,16 +809,12 @@ static void vnt_configure(struct ieee80211_hw *hw,
 {
 	struct vnt_private *priv = hw->priv;
 	u8 rx_mode = 0;
-	int rc;
 
 	*total_flags &= FIF_ALLMULTI | FIF_OTHER_BSS | FIF_BCN_PRBRESP_PROMISC;
 
-	rc = vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
+	vnt_control_in(priv, MESSAGE_TYPE_READ, MAC_REG_RCR,
 		       MESSAGE_REQUEST_MACREG, sizeof(u8), &rx_mode);
 
-	if (!rc)
-		rx_mode = RCR_MULTICAST | RCR_BROADCAST;
-
 	dev_dbg(&priv->usb->dev, "rx mode in = %x\n", rx_mode);
 
 	if (changed_flags & FIF_ALLMULTI) {