This patch (as1667) removes an incorrect driver->unbind() call from
the net2280 driver.  If startup fails, the UDC core takes care of
unbinding the gadget driver automatically; the controller driver
shouldn't do it too.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>
 err_func:
        device_remove_file (&dev->pdev->dev, &dev_attr_function);
 err_unbind:
-       driver->unbind (&dev->gadget);
        dev->gadget.dev.driver = NULL;
        dev->driver = NULL;
        return retval;