[PATCH] wireless: clean-up some "check return code" warnings

Clean-up some warnings from missing return code checks, mostly from
calling pci_enable_device during a PCI resume.

Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/ipw2200.c b/drivers/net/wireless/ipw2200.c
index 72120d5..c692d01 100644
--- a/drivers/net/wireless/ipw2200.c
+++ b/drivers/net/wireless/ipw2200.c
@@ -11727,12 +11727,18 @@
 {
 	struct ipw_priv *priv = pci_get_drvdata(pdev);
 	struct net_device *dev = priv->net_dev;
+	int err;
 	u32 val;
 
 	printk(KERN_INFO "%s: Coming out of suspend...\n", dev->name);
 
 	pci_set_power_state(pdev, PCI_D0);
-	pci_enable_device(pdev);
+	err = pci_enable_device(pdev);
+	if (err) {
+		printk(KERN_ERR "%s: pci_enable_device failed on resume\n",
+		       dev->name);
+		return err;
+	}
 	pci_restore_state(pdev);
 
 	/*