diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 07f6baa15c0cd4cc075130d45130729eb77c7d1b..9a95abf2dedfad3dce17f6739eaba93a23e4c105 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -912,8 +912,10 @@ static int efx_ptp_probe_channel(struct efx_channel *channel)
 
 	ptp->phc_clock = ptp_clock_register(&ptp->phc_clock_info,
 					    &efx->pci_dev->dev);
-	if (!ptp->phc_clock)
+	if (IS_ERR(ptp->phc_clock)) {
+		rc = PTR_ERR(ptp->phc_clock);
 		goto fail3;
+	}
 
 	INIT_WORK(&ptp->pps_work, efx_ptp_pps_worker);
 	ptp->pps_workwq = create_singlethread_workqueue("sfc_pps");