RDMA/irdma: Change the returned type to void

RDMA/irdma: Change the returned type to void

Since the function irdma_sc_parse_fpm_commit_buf always returns 0, remove
the returned value check and change the returned type to void.

Fixes: 1f33a1b8ad36 ("RDMA/irdma: Implement HW Admin Queue OPs")
Link: https://lore.kernel.org/r/20210708064752.797520-1-yanjun.zhu@linux.dev
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Reviewed-by: Majd Dibbiny <majd@nvidia.com>
Acked-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>