iwlwifi: fix STATUS_EXIT_PENDING is not set on pci_remove

This patch sets STATUS_EXIT_PENDING on pci_remove. Otherwise
iwl4965_down may fail to uninitialize the driver.
Signed-off-by: NGregory Greenman <gregory.greenman@intel.com>
Signed-off-by: NMohamed Abbas <mohamed.abbas@intel.com>
Signed-off-by: NTomas Winkler <tomas.winkler@intel.com>
Signed-off-by: NZhu Yi <yi.zhu@intel.com>
Signed-off-by: NJohn W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl-agn.c

@@ -4372,15 +4372,18 @@ static void __devexit iwl4965_pci_remove(struct pci_dev *pdev)
 	iwl_dbgfs_unregister(priv);
 	sysfs_remove_group(&pdev->dev.kobj, &iwl4965_attribute_group);
 
+	/* ieee80211_unregister_hw call wil cause iwl4965_mac_stop to
+	 * to be called and iwl4965_down since we are removing the device
+	 * we need to set STATUS_EXIT_PENDING bit.
+	 */
+	set_bit(STATUS_EXIT_PENDING, &priv->status);
 	if (priv->mac80211_registered) {
 		ieee80211_unregister_hw(priv->hw);
 		priv->mac80211_registered = 0;
+	} else {
+		iwl4965_down(priv);
 	}
 
-	set_bit(STATUS_EXIT_PENDING, &priv->status);
-
-	iwl4965_down(priv);
-
 	/* make sure we flush any pending irq or
 	 * tasklet for the driver
 	 */