[added to the v4.1 stable tree] of: fdt: Fix return value in __unflatten_device_tree()

["Levin, Alexander (Sasha Levin)" <alexander.levin@xxxxxxxxxxx>]

From: Florian Fainelli <f.fainelli@xxxxxxxxx>

Commit 78de28c67c8f ("of: fdt: add missing allocation-failure check")
would make us return NULL in a function declared to return void as of
the 4.1 kernel.

Fixes: 78de28c67c8f ("of: fdt: add missing allocation-failure check")
Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
 drivers/of/fdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index bf89754fe973..308a95ead432 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -413,7 +413,7 @@ static void __unflatten_device_tree(void *blob,
 	/* Allocate memory for the expanded device tree */
 	mem = dt_alloc(size + 4, __alignof__(struct device_node));
 	if (!mem)
-		return NULL;
+		return;
 
 	memset(mem, 0, size);
 
-- 
2.11.0