dpaa2-ptp: Fix refcount leak in dpaa2_ptp_probe

[ Upstream commit 2b04bd4f03bba021959ca339314f6739710f0954 ]

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

Fixes: d346c9e86d86 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
index 32b5faa87bb8dbcef676f744adf0f4f4ece4ba61..208a3459f2e2924b50d50d9efbe04b2f1544d02f 100644 (file)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c
@@ -168,7 +168,7 @@ 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);
@@ -212,6 +212,8 @@ 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: