e1000e: Cleanup code logic in e1000_check_for_serdes_link_82571()

Cleanup code to make it more clean and readable.

Signed-off-by: Tushar Dave <tushar.n.dave@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/e1000e/82571.c

@@ -1677,16 +1677,18 @@ static s32 e1000_check_for_serdes_link_82571(struct e1000_hw *hw)
 			e_dbg("ANYSTATE  -> DOWN\n");
 		} else {
 			/*
-			 * Check several times, if Sync and Config
-			 * both are consistently 1 then simply ignore
-			 * the Invalid bit and restart Autoneg
+			 * Check several times, if SYNCH bit and CONFIG
+			 * bit both are consistently 1 then simply ignore
+			 * the IV bit and restart Autoneg
 			 */
 			for (i = 0; i < AN_RETRY_COUNT; i++) {
 				udelay(10);
 				rxcw = er32(RXCW);
-				if ((rxcw & E1000_RXCW_IV) &&
-				    !((rxcw & E1000_RXCW_SYNCH) &&
-				      (rxcw & E1000_RXCW_C))) {
+				if ((rxcw & E1000_RXCW_SYNCH) &&
+				    (rxcw & E1000_RXCW_C))
+					continue;
+
+				if (rxcw & E1000_RXCW_IV) {
 					mac->serdes_has_link = false;
 					mac->serdes_link_state =
 					    e1000_serdes_link_down;