LU-5756 hsm: add missing return code in llapi_hsm_copytool_register

LU-5756 hsm: add missing return code in llapi_hsm_copytool_register

llapi_hsm_copytool_register() returns a bogus error code on one error
path.

Removed a never true "if" case.

If the LL_IOC_HSM_CT_START fails, then we have to go to out_kuc,
not out_err.

Change-Id: I738078392f98d4616f6451beece4f0d97bc8051d
Signed-off-by: frank zago <fzago@cray.com>
Reviewed-on: http://review.whamcloud.com/12314
Reviewed-by: Henri Doreau <henri.doreau@cea.fr>
Tested-by: Jenkins
Reviewed-by: James Nunez <james.a.nunez@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>