net/iavf: fix Tx threshold check

[ upstream commit ed21e06 ]

Function check_tx_thresh is called with wrong parameter. If the
check fails, tx_queue_setup should return error not keep going.
This patch fixes above issues.

Fixes: 69dd4c3 ("net/avf: enable queue and device")

Signed-off-by: Xiaoyun Li <xiaoyun.li@intel.com>
Acked-by: Beilei Xing <beilei.xing@intel.com>

drivers/net/iavf/iavf_rxtx.c

@@ -449,7 +449,8 @@ iavf_dev_tx_queue_setup(struct rte_eth_dev *dev,
 		tx_conf->tx_rs_thresh : DEFAULT_TX_RS_THRESH);
 	tx_free_thresh = (uint16_t)((tx_conf->tx_free_thresh) ?
 		tx_conf->tx_free_thresh : DEFAULT_TX_FREE_THRESH);
-	check_tx_thresh(nb_desc, tx_rs_thresh, tx_rs_thresh);
+	if (check_tx_thresh(nb_desc, tx_rs_thresh, tx_free_thresh) != 0)
+		return -EINVAL;
 
 	/* Free memory if needed. */
 	if (dev->data->tx_queues[queue_idx]) {