More cleanups relating to vm object allocation failure: make sure we call VOP_CLOSE() with vp unlocked; clean up the return path a little, in as much as our namei/vnode operation return paths can be cleared up.  For a return case that was apparently never taken, this sure is ugly.
More cleanups relating to vm object allocation failure: make sure we
call VOP_CLOSE() with vp unlocked; clean up the return path a little,
in as much as our namei/vnode operation return paths can be cleared
up.  For a return case that was apparently never taken, this sure
is ugly.

Reviewed by:	jeffr

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase