amd-xgbe: fix ->rss_hash_type

There was a missing break statement so we set everything to
PKT_HASH_TYPE_L3 even when we intended to use PKT_HASH_TYPE_L4.

Fixes: 5b9dfe29 ('amd-xgbe: Provide support for receive side scaling')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/amd/xgbe/xgbe-dev.c

@@ -1600,7 +1600,7 @@ static int xgbe_dev_read(struct xgbe_channel *channel)
 		case RX_DESC3_L34T_IPV6_TCP:
 		case RX_DESC3_L34T_IPV6_UDP:
 			packet->rss_hash_type = PKT_HASH_TYPE_L4;
-
+			break;
 		default:
 			packet->rss_hash_type = PKT_HASH_TYPE_L3;
 		}