mfd: dln2: Fix memory leak in dln2_probe()

[ Upstream commit 96da8f148396329ba769246cb8ceaa35f1ddfc48 ]

When dln2_setup_rx_urbs() in dln2_probe() fails, error out_free forgets
to call usb_put_dev() to decrease the refcount of dln2->usb_dev.

Fix this by adding usb_put_dev() in the error handling code of
dln2_probe().

Signed-off-by: Qiang Ning <qning0106@126.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230330024353.4503-1-qning0106@126.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c
index fe614ba5fec9074a6a5d965f23f96a09b1af1ca6..37217e01f27c0200cb70a10262fa630635796b17 100644 (file)
--- a/drivers/mfd/dln2.c
+++ b/drivers/mfd/dln2.c
@@ -800,6 +800,7 @@ static int dln2_probe(struct usb_interface *interface,
        dln2_stop_rx_urbs(dln2);
 
 out_free:
+       usb_put_dev(dln2->usb_dev);
        dln2_free(dln2);
 
        return ret;