scsi: esas2r: Remove unnecessary casts

In a number of places in esas2r_ioctl.c, the void* returned from
pci_alloc_consistent() is cast unnecessarily. Remove casts.

Issue identified with Coccinelle.

Link: https://lore.kernel.org/r/20200820181411.866057-1-alex.dewar90@gmail.com


Signed-off-by: Alex Dewar <alex.dewar90@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>