[media] as102: fix leaks at failure paths in as102_usb_probe()

Failure handling is incomplete in as102_usb_probe().
The patch implements proper resource deallocations.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

diff --git a/drivers/staging/media/as102/as102_usb_drv.c b/drivers/staging/media/as102/as102_usb_drv.c
index 8759553..e4a6945 100644 (file)
--- a/drivers/staging/media/as102/as102_usb_drv.c
+++ b/drivers/staging/media/as102/as102_usb_drv.c
@@ -401,14 +401,21 @@ static int as102_usb_probe(struct usb_interface *intf,
        /* request buffer allocation for streaming */
        ret = as102_alloc_usb_stream_buffer(as102_dev);
        if (ret != 0)
-               goto failed;
+               goto failed_stream;
 
        /* register dvb layer */
        ret = as102_dvb_register(as102_dev);
+       if (ret != 0)
+               goto failed_dvb;
 
        return ret;
 
+failed_dvb:
+       as102_free_usb_stream_buffer(as102_dev);
+failed_stream:
+       usb_deregister_dev(intf, &as102_usb_class_driver);
 failed:
+       usb_put_dev(as102_dev->bus_adap.usb_dev);
        usb_set_intfdata(intf, NULL);
        kfree(as102_dev);
        return ret;