ibdiags: Do not panic on ibstat query failure

ibstat relies on umad_get_ca() to retrieve device's statistics.
However, in case the latter function fails on a certain device, ibstat
panics and exits before processing and displaying other device's
statistics which may be obtainable.

Thus, warn on failed device query and continue querying the remaining
devices instead of an early exit.

Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>

infiniband-diags/ibstat.c

@@ -338,7 +338,7 @@ int main(int argc, char *argv[])
  if (list_only)
  printf("%s\n", ca_name);
  else if (ca_stat(ca_name, dev_port, short_format) < 0)
- IBPANIC("stat of IB device '%s' failed", ca_name);
+ IBWARN("stat of IB device '%s' failed", ca_name);
  }
  umad_free_ca_device_list(device_list);
  return 0;