[PATCH 2/4] bus: mvebu: add missing of_node_put() to fix reference leak

[Jisheng Zhang]

Add of_node_put to properly decrement the refcount when we are
done using a given node.

Signed-off-by: Jisheng Zhang <jszhang at marvell.com>
---
 drivers/bus/mvebu-mbus.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 33c6947..20da90f 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -837,6 +837,7 @@ int __init mvebu_mbus_init(const char *soc, phys_addr_t mbuswins_phys_base,
 {
 	struct mvebu_mbus_state *mbus = &mbus_state;
 	const struct of_device_id *of_id;
+	struct device_node *np;
 	int win;
 
 	for (of_id = of_mvebu_mbus_ids; of_id->compatible; of_id++)
@@ -860,8 +861,11 @@ int __init mvebu_mbus_init(const char *soc, phys_addr_t mbuswins_phys_base,
 		return -ENOMEM;
 	}
 
-	if (of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric"))
+	np = of_find_compatible_node(NULL, NULL, "marvell,coherency-fabric");
+	if (np) {
 		mbus->hw_io_coherency = 1;
+		of_node_put(np);
+	}
 
 	for (win = 0; win < mbus->soc->num_wins; win++)
 		mvebu_mbus_disable_window(mbus, win);
-- 
1.8.4.rc3