ide: ide_hwgroup_t.rq doesn't need an ide_lock held

While at it:
- no need to check for hwgroup presence in ide_dump_opcode()

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 9fc4cfb..1932119 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -277,14 +277,9 @@
 
 static void ide_dump_opcode(ide_drive_t *drive)
 {
-	struct request *rq;
+	struct request *rq = drive->hwif->hwgroup->rq;
 	ide_task_t *task = NULL;
 
-	spin_lock(&ide_lock);
-	rq = NULL;
-	if (HWGROUP(drive))
-		rq = HWGROUP(drive)->rq;
-	spin_unlock(&ide_lock);
 	if (!rq)
 		return;