distrib.c: In distrib_process_ssa_mad, log message on bad status and return 1

rather than 0

Should have been done as part of commits
8d16c40c736ad5165826c017c80842d0f0dd4822 and
a7752b14aedf00a178486ffb931478cc06e042fd

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