media: platform: allgro-dvt: unregister v4l2_device on the error path

[ Upstream commit c2b96a6818159fba8a3bcc38262da9e77f9b3ec7 ]

In allegro_probe(), the v4l2 device is not unregistered in the error
path, which results in a memory leak. Fix it by calling
v4l2_device_unregister() before returning error.

Fixes: d74d4e2359ec ("media: allegro: move driver out of staging")
Signed-off-by: Joe Hattori <joe@pf.is.s.u-tokyo.ac.jp>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Sebastian Fricke <sebastian.fricke@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/media/platform/allegro-dvt/allegro-core.c b/drivers/media/platform/allegro-dvt/allegro-core.c
index 88c36eb6174ad64fb30955820f097e71b1c8ab24..9ca4e2f94647b02d9e6753442447a0c78f142ca6 100644 (file)
--- a/drivers/media/platform/allegro-dvt/allegro-core.c
+++ b/drivers/media/platform/allegro-dvt/allegro-core.c
@@ -3914,6 +3914,7 @@ static int allegro_probe(struct platform_device *pdev)
        if (ret < 0) {
                v4l2_err(&dev->v4l2_dev,
                         "failed to request firmware: %d\n", ret);
+               v4l2_device_unregister(&dev->v4l2_dev);
                return ret;
        }