LU-5243 utils: use goto rather than GOTO()

LU-5243 utils: use goto rather than GOTO()

In lfs.c, liblustreapi.c, nidstrings.c and lustre_rsync.c use
return, assignments and goto statements rather than the GOTO()
and RETURN() macros.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: I5e5b5e9e73baadacfbad06ed9eefa1e0d4b9e612
Reviewed-on: http://review.whamcloud.com/10791
Tested-by: Jenkins
Reviewed-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Dmitry Eremin <dmitry.eremin@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>