[PATCH 5.10 084/102] iio: adc: adi-axi-adc: Fix refcount leak in adi_axi_adc_attach_client

From: Miaoqian Lin linmq006@gmail.com

commit ada7b0c0dedafd7d059115adf49e48acba3153a8 upstream.

of_parse_phandle() returns a node pointer with refcount incremented, we should use of_node_put() on it when not need anymore. Add missing of_node_put() to avoid refcount leak.

Fixes: ef04070692a2 ("iio: adc: adi-axi-adc: add support for AXI ADC IP core") Signed-off-by: Miaoqian Lin linmq006@gmail.com Link: https://lore.kernel.org/r/20220524074517.45268-1-linmq006@gmail.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/adi-axi-adc.c | 3 +++ 1 file changed, 3 insertions(+)

--- a/drivers/iio/adc/adi-axi-adc.c +++ b/drivers/iio/adc/adi-axi-adc.c @@ -334,16 +334,19 @@ static struct adi_axi_adc_client *adi_ax

if (!try_module_get(cl->dev->driver->owner)) { mutex_unlock(&registered_clients_lock); + of_node_put(cln); return ERR_PTR(-ENODEV); }

get_device(cl->dev); cl->info = info; mutex_unlock(&registered_clients_lock); + of_node_put(cln); return cl; }

mutex_unlock(&registered_clients_lock); + of_node_put(cln);

return ERR_PTR(-EPROBE_DEFER); }