of_find_node_by_path() returns a node with an elevated reference count,
but the function never drops it. Add the missing of_node_put() before
returning so that the reference is not leaked.

Fixes: 07d13a1d6120 ("of: unittest: Add test for of_dma_get_max_cpu_address()")
Cc: stable@vger.kernel.org
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
---
 drivers/of/unittest.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c
index 5259c45e355d..d1a88a043300 100644
--- a/drivers/of/unittest.c
+++ b/drivers/of/unittest.c
@@ -1110,6 +1110,8 @@ static void __init of_unittest_dma_get_max_cpu_address(void)
 	unittest(cpu_addr == 0x4fffffff,
 		 "of_dma_get_max_cpu_address: wrong CPU addr %pad (expecting %x)\n",
 		 &cpu_addr, 0x4fffffff);
+
+	of_node_put(np);
 }
 
 static void __init of_unittest_dma_ranges_one(const char *path,
-- 
2.34.1