- Add NULL checks to the pointers for the config_async mailbox
  and dump_wakeup_params mailbox.
- Add code to check return value of lpfc_read_sparams everywhere
  and handle failures appropriately.
Signed-off-by: NJames Smart <james.smart@emulex.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>