scsi: wd719x: Return proper error code when dma_set_mask() fails

During the process of driver probing, the probe function should return < 0
for failure, otherwise the kernel will treat value >= 0 as success.

Set 'err' to the error value returned by dma_set_mask() in case of failure.

Link: https://lore.kernel.org/r/1646060055-11361-1-git-send-email-zheyuma97@gmail.com
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Zheyu Ma <zheyuma97@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>