[PATCH] powerpc/boot: Only free if realloc() succeeds

simple_realloc() frees the original buffer (ptr) even if the
reallocation failed.

Fix it to behave like standard realloc() and only free the original
buffer if the reallocation succeeded.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
---
 arch/powerpc/boot/simple_alloc.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/boot/simple_alloc.c b/arch/powerpc/boot/simple_alloc.c
index db9aaa5face3..d07796fdf91a 100644
--- a/arch/powerpc/boot/simple_alloc.c
+++ b/arch/powerpc/boot/simple_alloc.c

@@ -112,10 +112,11 @@ static void *simple_realloc(void *ptr, unsigned long size)
 		return ptr;
 
 	new = simple_malloc(size);
-	if (new)
+	if (new) {
 		memcpy(new, ptr, p->size);
+		simple_free(ptr);
+	}
 
-	simple_free(ptr);
 	return new;
 }
 

-- 
2.43.2