media: nxp: imx8-isi: Remove redundant check for dma_set_mask_and_coherent()

dma_set_mask_and_coherent() never return failure when mask bigger than
32bit.

See commit f7ae20f2 ("docs: dma: correct dma_set_mask() sample code")

So remove return value check for dma_set_mask_and_coherent().

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250522-8qxp_camera-v5-5-d4be869fdb7e@nxp.com


Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>