[PATCH] net/i40e: fixed return value check for hash

[Qiming Yang <qiming.yang@intel.com>]

RSS hash configure get API didn't check the return value.
Will return sucess even get RSS hash key failed. This patch
fixed teh issue.

Fixes: d0a349409bd7 ("i40e: support AQ based RSS config")
Cc: stable@dpdk.org

Signed-off-by: Qiming Yang <qiming.yang@intel.com>
---
 drivers/net/i40e/i40e_ethdev.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/i40e/i40e_ethdev.c b/drivers/net/i40e/i40e_ethdev.c
index 7030eb1..552a7a5 100644
--- a/drivers/net/i40e/i40e_ethdev.c
+++ b/drivers/net/i40e/i40e_ethdev.c
@@ -7459,9 +7459,12 @@ i40e_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 	struct i40e_pf *pf = I40E_DEV_PRIVATE_TO_PF(dev->data->dev_private);
 	struct i40e_hw *hw = I40E_DEV_PRIVATE_TO_HW(dev->data->dev_private);
 	uint64_t hena;
+	int ret;
 
-	i40e_get_rss_key(pf->main_vsi, rss_conf->rss_key,
+	ret = i40e_get_rss_key(pf->main_vsi, rss_conf->rss_key,
 			 &rss_conf->rss_key_len);
+	if (ret)
+		return ret;
 
 	hena = (uint64_t)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(0));
 	hena |= ((uint64_t)i40e_read_rx_ctl(hw, I40E_PFQF_HENA(1))) << 32;
-- 
2.9.5