[PATCH 2/5] net: enetc: fix device and OF node leak at probe

[Johan Hovold <johan@kernel.org>]

Make sure to drop the references to the IERB OF node and platform device
taken by of_parse_phandle() and of_find_device_by_node() during probe.

Fixes: e7d48e5fbf30 ("net: enetc: add a mini driver for the Integrated Endpoint Register Block")
Cc: stable@vger.kernel.org	# 5.13
Cc: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
---
 drivers/net/ethernet/freescale/enetc/enetc_pf.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index f63a29e2e031..de0fb272c847 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -829,19 +829,29 @@ static int enetc_pf_register_with_ierb(struct pci_dev *pdev)
 {
 	struct platform_device *ierb_pdev;
 	struct device_node *ierb_node;
+	int ret;
 
 	ierb_node = of_find_compatible_node(NULL, NULL,
 					    "fsl,ls1028a-enetc-ierb");
-	if (!ierb_node || !of_device_is_available(ierb_node))
+	if (!ierb_node)
 		return -ENODEV;
 
+	if (!of_device_is_available(ierb_node)) {
+		of_node_put(ierb_node);
+		return -ENODEV;
+	}
+
 	ierb_pdev = of_find_device_by_node(ierb_node);
 	of_node_put(ierb_node);
 
 	if (!ierb_pdev)
 		return -EPROBE_DEFER;
 
-	return enetc_ierb_register_pf(ierb_pdev, pdev);
+	ret = enetc_ierb_register_pf(ierb_pdev, pdev);
+
+	put_device(&ierb_pdev->dev);
+
+	return ret;
 }
 
 static const struct enetc_si_ops enetc_psi_ops = {
-- 
2.49.1