IB/hfi1: Immediately remove invalid memory from hardware

When a user expected receive page is unmapped, it should be
immediately removed from hardware rather than depend on a
reaction from user space.

Fixes: 2677a768 ("IB/hfi1: Fix memory leak during unexpected shutdown")
Signed-off-by: Dean Luick <dean.luick@cornelisnetworks.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Link: https://lore.kernel.org/r/167328548663.1472310.7871808081861622659.stgit@awfm-02.cornelisnetworks.com


Signed-off-by: Leon Romanovsky <leon@kernel.org>