r8169: don't reset tx ring indexes in rtl8169_tx_clear

In places where the indexes have to be reset, we call
rtl8169_init_ring_indexes() anyway after rtl8169_tx_clear().
Signed-off-by: NHeiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/realtek/r8169_main.c

@@ -3955,7 +3955,6 @@ static void rtl8169_tx_clear_range(struct rtl8169_private *tp, u32 start,
 static void rtl8169_tx_clear(struct rtl8169_private *tp)
 {
 	rtl8169_tx_clear_range(tp, tp->dirty_tx, NUM_TX_DESC);
-	tp->cur_tx = tp->dirty_tx = 0;
 	netdev_reset_queue(tp->dev);
 }