diff --git a/lib/lmb.c b/lib/lmb.c
index 93fc1be..61bb13d 100644
--- a/lib/lmb.c
+++ b/lib/lmb.c
@@ -714,7 +714,7 @@
 	return alloc;
 }
 
-phys_addr_t lmb_alloc_addr(phys_addr_t base, phys_size_t size, u32 flags)
+int lmb_alloc_addr(phys_addr_t base, phys_size_t size, u32 flags)
 {
 	long rgn;
 	struct lmb_region *lmb_memory = lmb.available_mem.data;
@@ -731,11 +731,11 @@
 				      base + size - 1, 1)) {
 			/* ok, reserve the memory */
 			if (!lmb_reserve(base, size, flags))
-				return base;
+				return 0;
 		}
 	}
 
-	return 0;
+	return -1;
 }
 
 /* Return number of bytes from a given address that are free */