iwlwifi: fix error flow in iwl*_pci_probe

Both the agn and 3945 drivers has some problems with dealing with
errors in their probe functions. Ensure that a goto will undo only
things that was done before the goto was called.

Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/iwlwifi/iwl-agn.c b/drivers/net/wireless/iwlwifi/iwl-agn.c
index 36bafeb3..129e2d3 100644
--- a/drivers/net/wireless/iwlwifi/iwl-agn.c
+++ b/drivers/net/wireless/iwlwifi/iwl-agn.c
@@ -3868,7 +3868,7 @@
 	}
 	err = iwl_eeprom_check_version(priv);
 	if (err)
-		goto out_iounmap;
+		goto out_free_eeprom;
 
 	/* extract MAC Address */
 	iwl_eeprom_get_mac(priv, priv->mac_addr);
@@ -3945,6 +3945,8 @@
 	return 0;
 
  out_remove_sysfs:
+	destroy_workqueue(priv->workqueue);
+	priv->workqueue = NULL;
 	sysfs_remove_group(&pdev->dev.kobj, &iwl_attribute_group);
  out_uninit_drv:
 	iwl_uninit_drv(priv);
@@ -3953,8 +3955,8 @@
  out_iounmap:
 	pci_iounmap(pdev, priv->hw_base);
  out_pci_release_regions:
-	pci_release_regions(pdev);
 	pci_set_drvdata(pdev, NULL);
+	pci_release_regions(pdev);
  out_pci_disable_device:
 	pci_disable_device(pdev);
  out_ieee80211_free_hw: