viced: do not overwrite possible failure

viced: do not overwrite possible failure

The function ‘hpr_Initialize’ overwrites the code
returned by ‘ubik_ClientInit’. As a result, ‘hpr_Initialize’
will not report any failure triggered by ‘ubik_ClientInit’.

To fix this problem, store the code returned by ‘rxs_Release’
in a new variable. Only return this code if the function
‘ubik_ClientInit’ worked properly. Otherwise, return the code
provided by ‘ubik_ClientInit’.

Change-Id: I1820e3cbc2131daace01cec0464e56fd2982a783
Reviewed-on: http://gerrit.openafs.org/12137
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>