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

[Michael Ellerman]

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 <m...@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