sh_eth: Remove redundant alignment adjustment

PTR_ALIGN macro after skb_reserve is redundant, because skb_reserve
function adjusts the alignment of skb->data.

Signed-off-by: Mitsuhiro Kimura <mitsuhiro.kimura.kc@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/renesas/sh_eth.c

@@ -1142,7 +1142,7 @@ static void sh_eth_ring_format(struct net_device *ndev)
 
 		/* RX descriptor */
 		rxdesc = &mdp->rx_ring[i];
-		rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
+		rxdesc->addr = virt_to_phys(skb->data);
 		rxdesc->status = cpu_to_edmac(mdp, RD_RACT | RD_RFP);
 
 		/* The size of the buffer is 16 byte boundary. */
@@ -1476,7 +1476,7 @@ static int sh_eth_rx(struct net_device *ndev, u32 intr_status, int *quota)
 			sh_eth_set_receive_align(skb);
 
 			skb_checksum_none_assert(skb);
-			rxdesc->addr = virt_to_phys(PTR_ALIGN(skb->data, 4));
+			rxdesc->addr = virt_to_phys(skb->data);
 		}
 		if (entry >= mdp->num_rx_ring - 1)
 			rxdesc->status |=