mfd: dln2: Fix memory leak in dln2_probe()

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

diff --git a/drivers/mfd/dln2.c b/drivers/mfd/dln2.c
index 6cd0b0c752d6e607ee21e50db5832e3f86327e5f..c3149729cec2e3a3fc153d5e6c08ac05cb653062 100644 (file)
--- a/drivers/mfd/dln2.c
+++ b/drivers/mfd/dln2.c
@@ -827,6 +827,7 @@ out_stop_rx:
        dln2_stop_rx_urbs(dln2);
 
 out_free:
+       usb_put_dev(dln2->usb_dev);
        dln2_free(dln2);
 
        return ret;