JFFS2: memory leak in jffs2_do_mount_fs()

If  jffs2_sum_init()  fails,  c->blocks is not freed neither in
jffs2_do_mount_fs() nor in jffs2_do_fill_super().
Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>

fs/jffs2/build.c

@@ -348,12 +348,21 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c)
 
 	ret = jffs2_sum_init(c);
 	if (ret)
-		return ret;
+		goto out_free;
 
 	if (jffs2_build_filesystem(c)) {
 		dbg_fsbuild("build_fs failed\n");
 		jffs2_free_ino_caches(c);
 		jffs2_free_raw_node_refs(c);
+		ret = -EIO;
+		goto out_free;
+	}
+
+	jffs2_calc_trigger_levels(c);
+
+	return 0;
+
+ out_free:
 #ifndef __ECOS
 	if (jffs2_blocks_use_vmalloc(c))
 		vfree(c->blocks);
@@ -361,10 +370,5 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c)
 #endif
 		kfree(c->blocks);
 
-		return -EIO;
-	}
-
-	jffs2_calc_trigger_levels(c);
-
-	return 0;
+	return ret;
 }