[U-Boot] [Patch] For bug in UBIFS function ubifs_finddir

[Rod Boyce <uboot@teamboyce.co.uk>]

Free private_data member element before freeing file structure.  This
was causing malloc to crash.  Also remove unnecessary variable
assigments after file structure was free'd.

Signed-off-by: Rod Boyce <uboot@teamboyce.co.uk>
------------------------------- fs/ubifs/ubifs.c 
------------------------------
diff --git a/fs/ubifs/ubifs.c b/fs/ubifs/ubifs.c
index 5a5c739..61f70b2 100644
--- a/fs/ubifs/ubifs.c
+++ b/fs/ubifs/ubifs.c
@@ -360,6 +360,8 @@
          return err;
      }

+    if (file->private_data)
+        kfree(file->private_data);
      if (file)
          free(file);
      if (dentry)
@@ -367,10 +369,6 @@
      if (dir)
          free(dir);

-    if (file->private_data)
-        kfree(file->private_data);
-    file->private_data = NULL;
-    file->f_pos = 2;
      return 0;
  }