net/ixgbe: remove redundant MAC flag check

[ upstream commit 5db5d3b ]

The flag of RTE_ETHTYPE_FLAGS_MAC has been checked twice, so remove the
first error message "Not supported by ethertype filter" which is not so
specific, and keep the error message "mac compare is unsupported" which
aligns to the definition of RTE_ETHTYPE_FLAGS_MAC.

Fixes: eb3539f ("net/ixgbe: parse ethertype filter")

Signed-off-by: Haiyue Wang <haiyue.wang@intel.com>
Acked-by: Qi Zhang <qi.z.zhang@intel.com>

drivers/net/ixgbe/ixgbe_flow.c

@@ -870,15 +870,6 @@ ixgbe_parse_ethertype_filter(struct rte_eth_dev *dev,
 	if (ret)
 		return ret;
 
-	/* Ixgbe doesn't support MAC address. */
-	if (filter->flags & RTE_ETHTYPE_FLAGS_MAC) {
-		memset(filter, 0, sizeof(struct rte_eth_ethertype_filter));
-		rte_flow_error_set(error, EINVAL,
-			RTE_FLOW_ERROR_TYPE_ITEM,
-			NULL, "Not supported by ethertype filter");
-		return -rte_errno;
-	}
-
 	if (filter->queue >= dev->data->nb_rx_queues) {
 		memset(filter, 0, sizeof(struct rte_eth_ethertype_filter));
 		rte_flow_error_set(error, EINVAL,