[PATCH 3.16 231/254] of: fdt: Fix return with value in void function

[Ben Hutchings]

3.16.55-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <b...@decadent.org.uk>

Commit 49e67dd17649 "of: fdt: add missing allocation-failure check"
added a "return NULL" statement in __unflatten_device_tree().  When
applied to the 3.16-stable branch, this introduced a compiler warning
(not an error!) because the function returns void here.

Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -381,7 +381,7 @@ static void __unflatten_device_tree(void
        /* 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);