ixgbe: do not disable flow control in ixgbe_check_mac_link

Disabling flow control in ixgbe_check_mac_link() results in incorrect
reporting by ethtool when link goes down, so remove it.

Signed-off-by: Emil Tantilov <emil.s.tantilov@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

drivers/net/ethernet/intel/ixgbe/ixgbe_82598.c

@@ -650,11 +650,6 @@ static s32 ixgbe_check_mac_link_82598(struct ixgbe_hw *hw,
 	    (ixgbe_validate_link_ready(hw) != 0))
 		*link_up = false;
 
-	/* if link is down, zero out the current_mode */
-	if (*link_up == false) {
-		hw->fc.current_mode = ixgbe_fc_none;
-		hw->fc.fc_was_autonegged = false;
-	}
 out:
 	return 0;
 }

drivers/net/ethernet/intel/ixgbe/ixgbe_common.c

@@ -3095,12 +3095,6 @@ s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
 	else
 		*speed = IXGBE_LINK_SPEED_UNKNOWN;
 
-	/* if link is down, zero out the current_mode */
-	if (*link_up == false) {
-		hw->fc.current_mode = ixgbe_fc_none;
-		hw->fc.fc_was_autonegged = false;
-	}
-
 	return 0;
 }