ceph: Always free allocated memory in osdmap_decode()

Always free memory allocated to 'pi' in
net/ceph/osdmap.c::osdmap_decode().

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/net/ceph/osdmap.c b/net/ceph/osdmap.c
index d73f3f6..71603ac 100644
--- a/net/ceph/osdmap.c
+++ b/net/ceph/osdmap.c
@@ -605,8 +605,10 @@
 			goto bad;
 		}
 		err = __decode_pool(p, end, pi);
-		if (err < 0)
+		if (err < 0) {
+			kfree(pi);
 			goto bad;
+		}
 		__insert_pg_pool(&map->pg_pools, pi);
 	}