greybus: properly drop device reference

Drop the USB device reference taken at the top of ap_probe() in the
event greybus_create_hd() fails.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

diff --git a/drivers/staging/greybus/es1-ap-usb.c b/drivers/staging/greybus/es1-ap-usb.c
index 21fe4fd..21db78f 100644 (file)
--- a/drivers/staging/greybus/es1-ap-usb.c
+++ b/drivers/staging/greybus/es1-ap-usb.c
@@ -386,8 +386,10 @@ static int ap_probe(struct usb_interface *interface,
        udev = usb_get_dev(interface_to_usbdev(interface));
 
        hd = greybus_create_hd(&es1_driver, &udev->dev);
-       if (!hd)
+       if (!hd) {
+               usb_put_dev(udev);
                return -ENOMEM;
+       }
 
        es1 = hd_to_es1(hd);
        es1->hd = hd;