Kfree can cope with a null argument, so drop null tests.
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@ expression ptr; @@
- if (ptr != NULL)
  kfree(ptr);
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
                        lock->l_export = NULL;
                }
 
-               if (lock->l_lvb_data != NULL)
-                       kfree(lock->l_lvb_data);
+               kfree(lock->l_lvb_data);
 
                ldlm_interval_free(ldlm_interval_detach(lock));
                lu_ref_fini(&lock->l_reference);