Fix MISRA Rule 17.7. Change init_pbdma_map fn pointer to return void. JIRA NVGPU-3383 Change-Id: Id76522c22a9c85ccafff8bd7f9a93cab139f56d5 Signed-off-by: Seema Khowala <seemaj@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/2113212 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>