e1000e: Fix logic reversal keeping link active

A logic mishap caused the adapter to keep link while we can
disable it due to WoL not being active, and vice versa.

Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/e1000e/netdev.c b/drivers/net/e1000e/netdev.c
index f58f017..b9b0d32 100644
--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -2008,7 +2008,7 @@
 	u16 mii_reg;
 
 	/* WoL is enabled */
-	if (!adapter->wol)
+	if (adapter->wol)
 		return;
 
 	/* non-copper PHY? */