dwc_eth_qos: Fix dma address for multi-fragment skbs

[ Upstream commit d4618732 ]

The offset inside the fragment was not used for the dma address and
silent data corruption resulted because TSO makes the checksum match.

Fixes: 077742da ("dwc_eth_qos: Add support for Synopsys DWC Ethernet QoS")
Signed-off-by: Lars Persson <larper@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/ethernet/synopsys/dwc_eth_qos.c

@@ -2107,7 +2107,7 @@ static int dwceqos_tx_frags(struct sk_buff *skb, struct net_local *lp,
 			dd = &lp->tx_descs[lp->tx_next];
 
 			/* Set DMA Descriptor fields */
-			dd->des0 = dma_handle;
+			dd->des0 = dma_handle + consumed_size;
 			dd->des1 = 0;
 			dd->des2 = dma_size;