Staging: vt6656: Checkpatch fix: else after break or return

This patch fixes the following checkpatch.pl error:
rxtx.c:588: WARNING: else is not generally useful after a break or return
Signed-off-by: Emrys Bayliss <emrys@paradise.net.nz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6656/rxtx.c

@@ -575,8 +575,6 @@ static u16 vnt_fill_cts_head(struct vnt_usb_send_context *tx_context,
 
 		return vnt_rxtx_datahead_g(tx_context, &buf->data_head);
 	}
-
-	return 0;
 }
 
 static u16 vnt_rxtx_rts(struct vnt_usb_send_context *tx_context,