We should allocate DMA channel resources before registering the
DMA device in sba_probe() because we can get DMA request soon
after registering the DMA device. If DMA channel resources are
not allocated before first DMA request then SBA-RAID driver will
crash.
Signed-off-by: NAnup Patel <anup.patel@broadcom.com>
Signed-off-by: NVinod Koul <vinod.koul@intel.com>