usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe

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.
of_node_put() will check NULL pointer.

Fixes: 24a28e428351 ("USB: gadget driver for LPC32xx")
Cc: stable <stable@kernel.org>
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220603140246.64529-1-linmq006@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/udc/lpc32xx_udc.c b/drivers/usb/gadget/udc/lpc32xx_udc.c
index 6117ae8..cea10cd 100644 (file)
--- a/drivers/usb/gadget/udc/lpc32xx_udc.c
+++ b/drivers/usb/gadget/udc/lpc32xx_udc.c
@@ -3016,6 +3016,7 @@ static int lpc32xx_udc_probe(struct platform_device *pdev)
        }
 
        udc->isp1301_i2c_client = isp1301_get_client(isp1301_node);
+       of_node_put(isp1301_node);
        if (!udc->isp1301_i2c_client) {
                return -EPROBE_DEFER;
        }