Free file handle for /firmware/image after use

Change-Id: Id59e25486b45dffc87a89a961970a6e8128a5237

init/devices.c

diff --git a/init/devices.c b/init/devices.c
index e25034c..cc350ef 100644
--- a/init/devices.c
+++ b/init/devices.c
@@ -776,6 +776,7 @@
 file_free_out:
     free(file1);
     free(file2);
+    free(file3);
 data_free_out:
     free(data);
 loading_free_out: