I2C: fix oops in i2c-ali1535 driver if no hardware is present.

Thanks to Dave Jones for pointing this out.

drivers/i2c/busses/i2c-ali1535.c

@@ -517,6 +517,7 @@ static int __devinit ali1535_probe(struct pci_dev *dev, const struct pci_device_
 static void __devexit ali1535_remove(struct pci_dev *dev)
 {
 	i2c_del_adapter(&ali1535_adapter);
+	release_region(ali1535_smba, ALI1535_SMB_IOSIZE);
 }
 
 static struct pci_driver ali1535_driver = {
@@ -534,7 +535,6 @@ static int __init i2c_ali1535_init(void)
 static void __exit i2c_ali1535_exit(void)
 {
 	pci_unregister_driver(&ali1535_driver);
-	release_region(ali1535_smba, ALI1535_SMB_IOSIZE);
 }
 
 MODULE_AUTHOR("Frodo Looijaard <frodol@dds.nl>, "