[PATCH -next] octeontx2-pf: cn10k: Fix error return code in otx2_set_flowkey_cfg()

[Yang Yingliang]

If otx2_mbox_get_rsp() fails, otx2_set_flowkey_cfg() need return an
error code.

Fixes: e7938365459f ("octeontx2-pf: Fix algorithm index in MCAM rules with RSS action")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Yang Yingliang <yangyingliang@xxxxxxxxxx>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
index f630e5713025..ad79d2c05ca4 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_common.c
@@ -289,8 +289,10 @@ int otx2_set_flowkey_cfg(struct otx2_nic *pfvf)
 
 	rsp = (struct nix_rss_flowkey_cfg_rsp *)
 			otx2_mbox_get_rsp(&pfvf->mbox.mbox, 0, &req->hdr);
-	if (IS_ERR(rsp))
+	if (IS_ERR(rsp)) {
+		err = PTR_ERR(rsp);
 		goto fail;
+	}
 
 	pfvf->hw.flowkey_alg_idx = rsp->alg_idx;
 fail:
-- 
2.25.1