[ROSE]: return sane -E* from rose_proto_init()

Signed-off-by: Alexey Dobriyan <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/rose/af_rose.c

···
 	if (rose_ndevs > 0x7FFFFFFF/sizeof(struct net_device *)) {
 		printk(KERN_ERR "ROSE: rose_proto_init - rose_ndevs parameter to large\n");
 		proto_unregister(&rose_proto);
-		return -1;
+		return -EINVAL;
 	}
 
 	dev_rose = kmalloc(rose_ndevs * sizeof(struct net_device *), GFP_KERNEL);
 	if (dev_rose == NULL) {
 		printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate device structure\n");
 		proto_unregister(&rose_proto);
-		return -1;
+		return -ENOMEM;
 	}
 
 	memset(dev_rose, 0x00, rose_ndevs * sizeof(struct net_device*));
···
 				   name, rose_setup);
 		if (!dev) {
 			printk(KERN_ERR "ROSE: rose_proto_init - unable to allocate memory\n");
+			rc = -ENOMEM;
 			goto fail;
 		}
-		if (register_netdev(dev)) {
+		rc = register_netdev(dev);
+		if (rc) {
 			printk(KERN_ERR "ROSE: netdevice regeistration failed\n");
 			free_netdev(dev);
 			goto fail;
···
 	}
 	kfree(dev_rose);
 	proto_unregister(&rose_proto);
-	return -ENOMEM;
+	goto out;
 }
 module_init(rose_proto_init);