[PATCH net-next] octeontx2-pf: Fix otx2_get_fecparam()

[Dan Carpenter]

Static checkers complained about an off by one read overflow in
otx2_get_fecparam() and we applied two conflicting fixes for it.

Correct: b0aae0bde26f ("octeontx2: Fix condition.")
  Wrong: 93efb0c65683 ("octeontx2-pf: Fix out-of-bounds read in 
otx2_get_fecparam()")

Revert the incorrect fix.

Fixes: 93efb0c65683 ("octeontx2-pf: Fix out-of-bounds read in 
otx2_get_fecparam()")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
 drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c 
b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
index 5fe74036a611..f4962a97a075 100644
--- a/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
+++ b/drivers/net/ethernet/marvell/octeontx2/nic/otx2_ethtool.c
@@ -968,7 +968,7 @@ static int otx2_get_fecparam(struct net_device *netdev,
                if (!rsp->fwdata.supported_fec)
                        fecparam->fec = ETHTOOL_FEC_NONE;
                else
-                       fecparam->fec = fec[rsp->fwdata.supported_fec - 1];
+                       fecparam->fec = fec[rsp->fwdata.supported_fec];
        }
        return 0;
 }
-- 
2.30.0