[PATCH 4.19 215/234] usb: gadget: lpc32xx_udc: Fix refcount leak in lpc32xx_udc_probe

[Greg Kroah-Hartman]

From: Miaoqian Lin <linmq006@xxxxxxxxx>

commit 4757c9ade34178b351580133771f510b5ffcf9c8 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.
of_node_put() will check NULL pointer.

Fixes: 24a28e428351 ("USB: gadget driver for LPC32xx")
Cc: stable <stable@xxxxxxxxxx>
Signed-off-by: Miaoqian Lin <linmq006@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220603140246.64529-1-linmq006@xxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/gadget/udc/lpc32xx_udc.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/usb/gadget/udc/lpc32xx_udc.c
+++ b/drivers/usb/gadget/udc/lpc32xx_udc.c
@@ -3021,6 +3021,7 @@ static int lpc32xx_udc_probe(struct plat
 	}
 
 	udc->isp1301_i2c_client = isp1301_get_client(isp1301_node);
+	of_node_put(isp1301_node);
 	if (!udc->isp1301_i2c_client) {
 		retval = -EPROBE_DEFER;
 		goto phy_fail;