access: fix compilation warning: non-return path in non-void function

Signed-off-by: Sasha Kotchubievsky <sashakot@mellanox.com>
Signed-off-by: Hal Rosenstock <hal@mellanox.com>
access/ssa_path_record.c: Minor simplification to ssa_pr_compute_half_world error handling

Signed-off-by: Hal Rosenstock <hal@mellanox.com>