ide: pass error value to ide_complete_rq()

Set rq->errors at ide_complete_rq() call sites and then pass
error value to ide_complete_rq().

[ Some rq->errors assignments look really wrong but this patch
  leaves them alone to not introduce too many changes at once. ]

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index f56e9a9..407e491 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -260,7 +260,7 @@
 			printk(KERN_ERR PFX "%s: I/O error\n", drive->name);
 
 		if (blk_special_request(rq)) {
-			rq->errors = IDE_DRV_ERROR_GENERAL;
+			rq->errors = 0;
 			ide_complete_rq(drive, 0);
 			return ide_stopped;
 		} else