scsi: scsi_ioctl: Return error code when blk_rq_map_kern() fails
The callers of sg_scsi_ioctl() already check for negative return values, so we can drop the usage of DRIVER_ERROR and return the error from blk_rq_map_kern() instead. Link: https://lore.kernel.org/r/20210427083046.31620-3-hare@suse.deReviewed-by: NBart Van Assche <bvanassche@acm.org> Reviewed-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>
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