pd: don't check blk_execute_rq return value.

The driver never sets req->errors, so blk_execute_rq will always return 0.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

drivers/block/paride/pd.c

@@ -739,18 +739,15 @@ static int pd_special_command(struct pd_unit *disk,
 		      enum action (*func)(struct pd_unit *disk))
 {
 	struct request *rq;
-	int err = 0;
 
 	rq = blk_get_request(disk->gd->queue, REQ_OP_DRV_IN, __GFP_RECLAIM);
 	if (IS_ERR(rq))
 		return PTR_ERR(rq);
 
 	rq->special = func;
-
-	err = blk_execute_rq(disk->gd->queue, disk->gd, rq, 0);
-
+	blk_execute_rq(disk->gd->queue, disk->gd, rq, 0);
 	blk_put_request(rq);
-	return err;
+	return 0;
 }
 
 /* kernel glue structures */