staging: vt6655: return ENOMEM rather than ENODEV when alloc_etherdev fail

when alloc_etherdev fails we should be returning ENOMEM, not ENODEV
Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/vt6655/device_main.c

@@ -922,7 +922,7 @@ vt6655_probe(struct pci_dev *pcid, const struct pci_device_id *ent)
 
     if (dev == NULL) {
         printk(KERN_ERR DEVICE_NAME ": allocate net device failed \n");
-        return -ENODEV;
+        return -ENOMEM;
     }
 
     // Chain it all together