diff --git a/arch/powerpc/lib/rheap.c b/arch/powerpc/lib/rheap.c
index 29b2941cada0b67ac5be0248c2a1321179bf19a6..45907c1dae66da343344b5e1cfe9c682afc409ff 100644
--- a/arch/powerpc/lib/rheap.c
+++ b/arch/powerpc/lib/rheap.c
@@ -556,6 +556,7 @@ unsigned long rh_alloc_fixed(rh_info_t * info, unsigned long start, int size, co
 		be = blk->start + blk->size;
 		if (s >= bs && e <= be)
 			break;
+		blk = NULL;
 	}
 
 	if (blk == NULL)