dpaa2-ptp: Fix refcount leak in dpaa2_ptp_probe

This node pointer is returned by of_find_compatible_node() with
refcount incremented. Calling of_node_put() to aovid the refcount leak.

Fixes: 20adf591e96d ("dpaa2-ptp: reuse ptp_qoriq driver")
Signed-off-by: Miaoqian Lin <linmq006@gmail.com>
Link: https://lore.kernel.org/r/20220404125336.13427-1-linmq006@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
index 5f5f8c53c4a0f0d9653865373cb09c7b61e3bc96..c8cb541572ffe6494df4e97b849bbb6bcffdd874 100644 (file)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
@@ -167,7 +167,7 @@ static int dpaa2_ptp_probe(struct fsl_mc_device *mc_dev)
        base = of_iomap(node, 0);
        if (!base) {
                err = -ENOMEM;
-               goto err_close;
+               goto err_put;
        }
 
        err = fsl_mc_allocate_irqs(mc_dev);
@@ -210,6 +210,8 @@ err_free_mc_irq:
        fsl_mc_free_irqs(mc_dev);
 err_unmap:
        iounmap(base);
+err_put:
+       of_node_put(node);
 err_close:
        dprtc_close(mc_dev->mc_io, 0, mc_dev->mc_handle);
 err_free_mcp: