IB/hfi1: Fix memory leak during unexpected shutdown
During an unexpected shutdown, references to tid_rb_node were NULL'ed out without properly being released. Fix this by calling clear_tid_node in the mmu notifier remove callback rather than after these callbacks are called. Reviewed-by: NDean Luick <dean.luick@intel.com> Signed-off-by: NIra Weiny <ira.weiny@intel.com> Signed-off-by: NDoug Ledford <dledford@redhat.com>
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