[PATCH net-next] bnxt_en: combine 'else if' and 'else' into single branche

[YueHaibing]

The else-if branch and else branch set mac_ok to true similarly,
so combine the two into single else branch.

Aslo add comments to explain the two conditions, which
from Michael Chan and Vasundhara Volam.

Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
 drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c 
b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
index a649108..f560845 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt_sriov.c
@@ -956,9 +956,13 @@ static int bnxt_vf_validate_set_mac(struct bnxt *bp, 
struct bnxt_vf_info *vf)
        } else if (is_valid_ether_addr(vf->vf_mac_addr)) {
                if (ether_addr_equal((const u8 *)req->l2_addr, vf->vf_mac_addr))
                        mac_ok = true;
-       } else if (bp->hwrm_spec_code < 0x10202) {
-               mac_ok = true;
        } else {
+               /* There are two cases:
+                * 1.If firmware spec < 0x10202,VF MAC address is not forwarded
+                *   to the PF and so it doesn't have to match
+                * 2.Allow VF to modify it's own MAC when PF has not assigned a
+                *   valid MAC address and firmware spec >= 0x10202
+                */
                mac_ok = true;
        }
        if (mac_ok)
-- 
2.7.0