When an error happens in mctp_usb_probe() the reference count on the usb
interface structure needs to be properly dropped as it was incremented
earlier in the function.

Cc: Jeremy Kerr <jk@codeconstruct.com.au>
Cc: Matt Johnston <matt@codeconstruct.com.au>
Cc: stable <stable@kernel.org>
Assisted-by: gkh_clanker_2000
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/mctp/mctp-usb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/mctp/mctp-usb.c b/drivers/net/mctp/mctp-usb.c
index ef860cfc629f..eef17ae89298 100644
--- a/drivers/net/mctp/mctp-usb.c
+++ b/drivers/net/mctp/mctp-usb.c
@@ -355,6 +355,7 @@ static int mctp_usb_probe(struct usb_interface *intf,
 	usb_free_urb(dev->tx_urb);
 	usb_free_urb(dev->rx_urb);
 	free_netdev(netdev);
+	usb_put_dev(dev->usbdev);
 	return rc;
 }
 
-- 
2.53.0