[PATCH net-next] net: aquantia: fix error handling in aq_ptp_poll

[Gustavo A. R. Silva]

Fix currenty ignored returned error by properly checking *err* after
calling aq_nic->aq_hw_ops->hw_ring_hwts_rx_fill().

Addresses-Coverity-ID: 1487357 ("Unused value")
Fixes: 04a1839950d9 ("net: aquantia: implement data PTP datapath")
Signed-off-by: Gustavo A. R. Silva <gustavo@xxxxxxxxxxxxxx>
---
 drivers/net/ethernet/aquantia/atlantic/aq_ptp.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c b/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
index 3ec08415e53e..92b666f7d242 100644
--- a/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
+++ b/drivers/net/ethernet/aquantia/atlantic/aq_ptp.c
@@ -678,6 +678,8 @@ static int aq_ptp_poll(struct napi_struct *napi, int budget)
 
 		err = aq_nic->aq_hw_ops->hw_ring_hwts_rx_fill(aq_nic->aq_hw,
 							      &aq_ptp->hwts_rx);
+		if (err < 0)
+			goto err_exit;
 
 		was_cleaned = true;
 	}
-- 
2.23.0