[PATCH net] net: ethernet: marvell: octeontx2: nic: Add error pointer check in otx2_ethtool.c

[Dipendra Khadka <kdipendra88@gmail.com>]

Add error pointer check after calling otx2_mbox_get_rsp().

Signed-off-by: Dipendra Khadka <kdipendra88@gmail.com>
---
 .../ethernet/marvell/octeontx2/nic/otx2_ethtool.c    | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
index 0db62eb0dab3..36a08303752f 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
@@ -343,6 +343,12 @@ static void otx2_get_pauseparam(struct net_device *netdev,
 	if (!otx2_sync_mbox_msg(&pfvf->mbox)) {
 		rsp = (struct cgx_pause_frm_cfg *)
 		       otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
+
+		if (IS_ERR(rsp)) {
+			mutex_unlock(&pfvf->mbox.lock);
+			return;
+		}
+
 		pause->rx_pause = rsp->rx_pause;
 		pause->tx_pause = rsp->tx_pause;
 	}
@@ -1074,6 +1080,12 @@ static int otx2_set_fecparam(struct net_device *netdev,
 
 	rsp = (struct fec_mode *)otx2_mbox_get_rsp(&pfvf->mbox.mbox,
 						   0, &req->hdr);
+
+	if (IS_ERR(rsp)) {
+		err = PTR_ERR(rsp);
+		goto end;
+	}
+
 	if (rsp->fec >= 0)
 		pfvf->linfo.fec = rsp->fec;
 	else
-- 
2.43.0