attrrp_rt.C: translateAddr returns input address by default
attrrp_rt.C: translateAddr returns input address by default

After a HBRT reset, PEER_TARGET attribute had its value
preserved from prior to the reset. This attribute is a
target pointer, so its address value needs to be
translated for HBRT. When the translation is attempted
again after the reset, we have a valid address already.
The second translation fails and returns NULL. This fix
was to return the original address instead of NULL
when the translation isn't possible.

CQ:SW422523
Change-Id: I75de8d1e780140ca1979dd6fdf237c6c0526f08b
Reviewed-on: http://ralgit01.raleigh.ibm.com/gerrit1/56332
Reviewed-by: Richard J. Knight <94c04f3910596886be97211d492ad29f0ba29cd5@us.ibm.com>
Tested-by: Jenkins Server <8e3f934e4c44875bc48d33da3ea13d93ba9a233f@us.ibm.com>
Reviewed-by: Martin Gloff <df0a4963746ae04ab678d064fccc7ee68adfd751@us.ibm.com>
Tested-by: Jenkins OP Build CI <e610bd72261d3c0a48f1e8ae36832ab00774d426@us.ibm.com>
Tested-by: Jenkins OP HW <0eb0fff262f74a65a832afbcc7b153e391c9a3fd@us.ibm.com>
Reviewed-by: Christian R. Geddes <f397583a9caa8163a06ad1128784fb67413f2fe6@us.ibm.com>
Tested-by: FSP CI Jenkins <aa9e4d9ac7cd25905e9c0dd36d4150516e73dd86@us.ibm.com>
Reviewed-by: William G. Hoffa <7dd6aa5e78423995d9d7c7ecada5b77ee07f88cc@us.ibm.com>

open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot,open-power/hostboot