[net-next] net:enetc: bug fix for qos sfi operate space after freed

[Po Liu]

'Dan Carpenter' reported:
This code frees "sfi" and then dereferences it on the next line:
>                 kfree(sfi);
>                 clear_bit(sfi->index, epsfp.psfp_sfi_bitmap);

This "sfi->index" should be "index".

Reported-by: Dan Carpenter <dan.carpen...@oracle.com>
Signed-off-by: Po Liu <po....@nxp.com>
---
 drivers/net/ethernet/freescale/enetc/enetc_qos.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c 
b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
index 48e589e9d0f7..77f110e24505 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
@@ -903,7 +903,7 @@ static void stream_filter_unref(struct enetc_ndev_priv 
*priv, u32 index)
                enetc_streamfilter_hw_set(priv, sfi, false);
                hlist_del(&sfi->node);
                kfree(sfi);
-               clear_bit(sfi->index, epsfp.psfp_sfi_bitmap);
+               clear_bit(index, epsfp.psfp_sfi_bitmap);
        }
 }
 
-- 
2.17.1