[PATCH v2] crypto/nx: add missing call to of_node_put()

[Yang Li]

In one of the error paths of the for_each_child_of_node() loop,
add missing call to of_node_put().

Fix the following coccicheck warning:
./drivers/crypto/nx/nx-common-powernv.c:927:1-23: WARNING: Function
"for_each_child_of_node" should have of_node_put() before return around
line 936.

Reported-by: Abaci Robot <ab...@linux.alibaba.com>
Signed-off-by: Yang Li <yang....@linux.alibaba.com>
---

Changes in v2:
-add braces for if

 drivers/crypto/nx/nx-common-powernv.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/nx/nx-common-powernv.c 
b/drivers/crypto/nx/nx-common-powernv.c
index 13c65de..446f611 100644
--- a/drivers/crypto/nx/nx-common-powernv.c
+++ b/drivers/crypto/nx/nx-common-powernv.c
@@ -932,8 +932,10 @@ static int __init nx_powernv_probe_vas(struct device_node 
*pn)
                        ret = find_nx_device_tree(dn, chip_id, vasid,
                                NX_CT_GZIP, "ibm,p9-nx-gzip", &ct_gzip);
 
-               if (ret)
+               if (ret) {
+                       of_node_put(dn);
                        return ret;
+               }
        }
 
        if (!ct_842 || !ct_gzip) {
-- 
1.8.3.1