client: avoid multiple calls to path_walk

client: avoid multiple calls to path_walk

When we wrap a dname after a path walk, we cannot do another path walk.
Originally this method was setup to permit that but with (upcoming) encryption
it cannot work. The dname from the path_walk is in the encrypted namespace so
we cannot do another lookup in a second path_walk.

Signed-off-by: Patrick Donnelly <pdonnell@ibm.com>
(cherry picked from commit af8d267e5f8123eaf3cb311b7d608025468429f9)