[PATCH 1/3] crypto: nx: Hold the reference returned by of_find_compatible_node

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In nx842_pseries_init(), we should hold the reference returned by
of_find_compatible_node() and use it to call of_node_put to keep
refcount balance.

Signed-off-by: Liang He <windhl@xxxxxxx>
---
 drivers/crypto/nx/nx-common-pseries.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/nx/nx-common-pseries.c b/drivers/crypto/nx/nx-common-pseries.c
index 7584a34ba88c..3ea334b7f820 100644
--- a/drivers/crypto/nx/nx-common-pseries.c
+++ b/drivers/crypto/nx/nx-common-pseries.c
@@ -1208,10 +1208,13 @@ static struct vio_driver nx842_vio_driver = {
 static int __init nx842_pseries_init(void)
 {
 	struct nx842_devdata *new_devdata;
+	struct device_node *np;
 	int ret;
 
-	if (!of_find_compatible_node(NULL, NULL, "ibm,compression"))
+	np = of_find_compatible_node(NULL, NULL, "ibm,compression");
+	if (!np)
 		return -ENODEV;
+	of_node_put(np);
 
 	RCU_INIT_POINTER(devdata, NULL);
 	new_devdata = kzalloc(sizeof(*new_devdata), GFP_KERNEL);
-- 
2.25.1




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