wifi: ipw2200: fix memory leak in ipw_wdev_init()

In the error path of ipw_wdev_init(), exception value is returned, and
the memory applied for in the function is not released. Also the memory
is not released in ipw_pci_probe(). As a result, memory leakage occurs.
So memory release needs to be added to the error path of ipw_wdev_init().

Fixes: a3caa99e ("libipw: initiate cfg80211 API conversion (v2)")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20221209012422.182669-1-shaozhengchao@huawei.com

drivers/net/wireless/intel/ipw2x00/ipw2200.c

@@ -11383,9 +11383,14 @@ static int ipw_wdev_init(struct net_device *dev)
 	set_wiphy_dev(wdev->wiphy, &priv->pci_dev->dev);
 
 	/* With that information in place, we can now register the wiphy... */
-	if (wiphy_register(wdev->wiphy))
-		rc = -EIO;
+	rc = wiphy_register(wdev->wiphy);
+	if (rc)
+		goto out;
+
+	return 0;
 out:
+	kfree(priv->ieee->a_band.channels);
+	kfree(priv->ieee->bg_band.channels);
 	return rc;
 }