[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 <yuehaibing@xxxxxxxxxx>
---
 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