IB/hfi1: Revert egress pkey check enforcement

Current code has some serious flaws. Disarm the flag
pending an appropriate patch.

Fixes: 5352650 ("IB/hfi1: Permanently enable P_Key checking in HFI")
Cc: stable@vger.kernel.org
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/hfi1/init.c

@@ -519,7 +519,6 @@ void hfi1_init_pportdata(struct pci_dev *pdev, struct hfi1_pportdata *ppd,
 
 	ppd->pkeys[default_pkey_idx] = DEFAULT_P_KEY;
 	ppd->part_enforce |= HFI1_PART_ENFORCE_IN;
-	ppd->part_enforce |= HFI1_PART_ENFORCE_OUT;
 
 	if (loopback) {
 		hfi1_early_err(&pdev->dev,