e1000e: merge multiple conditional statements into one

Cleanup a set of conditional tests.
Signed-off-by: NBruce Allan <bruce.w.allan@intel.com>
Tested-by: NAaron Brown <aaron.f.brown@intel.com>
Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/e1000e/netdev.c

@@ -4914,12 +4914,11 @@ static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter,
 	struct e1000_hw *hw =  &adapter->hw;
 	u16 length, offset;
 
-	if (vlan_tx_tag_present(skb)) {
-		if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
-		    (adapter->hw.mng_cookie.status &
-			E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
-			return 0;
-	}
+	if (vlan_tx_tag_present(skb) &&
+	    !((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) &&
+	      (adapter->hw.mng_cookie.status &
+	       E1000_MNG_DHCP_COOKIE_STATUS_VLAN)))
+		return 0;
 
 	if (skb->len <= MINIMUM_DHCP_PACKET_SIZE)
 		return 0;