ice: Fix MAC address setting

Commit 2ccc1c1ccc671b ("ice: Remove excess error variables") merged
the usage of 'status' and 'err' variables into single one in
function ice_set_mac_address(). Unfortunately this causes
a regression when call of ice_fltr_add_mac() returns -EEXIST because
this return value does not indicate an error in this case but
value of 'err' remains to be -EEXIST till the end of the function
and is returned to caller.

Prior mentioned commit this does not happen because return value of
ice_fltr_add_mac() was stored to 'status' variable first and
if it was -EEXIST then 'err' remains to be zero.

Fix the problem by reset 'err' to zero when ice_fltr_add_mac()
returns -EEXIST.

Fixes: 2ccc1c1ccc671b ("ice: Remove excess error variables")
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: Alice Michael <alice.michael@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index b588d79..d755ce0 100644 (file)
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -5475,16 +5475,19 @@ static int ice_set_mac_address(struct net_device *netdev, void *pi)
 
        /* Add filter for new MAC. If filter exists, return success */
        err = ice_fltr_add_mac(vsi, mac, ICE_FWD_TO_VSI);
-       if (err == -EEXIST)
+       if (err == -EEXIST) {
                /* Although this MAC filter is already present in hardware it's
                 * possible in some cases (e.g. bonding) that dev_addr was
                 * modified outside of the driver and needs to be restored back
                 * to this value.
                 */
                netdev_dbg(netdev, "filter for MAC %pM already exists\n", mac);
-       else if (err)
+
+               return 0;
+       } else if (err) {
                /* error if the new filter addition failed */
                err = -EADDRNOTAVAIL;
+       }
 
 err_update_filters:
        if (err) {