scsi: ufs: Remove unnecessary return in void vops wrappers

scsi: ufs: Remove unnecessary return in void vops wrappers

ufshcd_vops_exit(), ufshcd_vops_setup_task_mgmt(), and
ufshcd_vops_hibern8_notify() use 'return hba->vops->xxx()' while other
void vops wrappers call without return.  Remove the unnecessary return
keywords for consistency.

Signed-off-by: Chanwoo Lee <cw9316.lee@samsung.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260529061503.301182-1-cw9316.lee@samsung.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>