[net PATCH] octeontx2-af: Fix pointer dereference before sanity check

[Sai Krishna]

PTP pointer is being dereferenced before NULL, error check.
Fixed the same to avoid NULL dereference and smatch checker warning.

Fixes: 2ef4e45d99b1 ("octeontx2-af: Add PTP PPS Errata workaround on CN10K silicon")
Signed-off-by: Sai Krishna <saikrishnag@xxxxxxxxxxx>
Signed-off-by: Naveen Mamindlapalli <naveenm@xxxxxxxxxxx>
---
 drivers/net/ethernet/marvell/octeontx2/af/ptp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c
index 3411e2e47d46..6a7dfb181fa8 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/ptp.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/ptp.c
@@ -449,12 +449,12 @@ static void ptp_remove(struct pci_dev *pdev)
 	struct ptp *ptp = pci_get_drvdata(pdev);
 	u64 clock_cfg;
 
-	if (cn10k_ptp_errata(ptp) && hrtimer_active(&ptp->hrtimer))
-		hrtimer_cancel(&ptp->hrtimer);
-
 	if (IS_ERR_OR_NULL(ptp))
 		return;
 
+	if (cn10k_ptp_errata(ptp) && hrtimer_active(&ptp->hrtimer))
+		hrtimer_cancel(&ptp->hrtimer);
+
 	/* Disable PTP clock */
 	clock_cfg = readq(ptp->reg_base + PTP_CLOCK_CFG);
 	clock_cfg &= ~PTP_CLOCK_CFG_PTP_EN;
-- 
2.25.1