treewide: Convert retrun typos to return

Tyops should be fixed.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
index 9796284..9967f9c 100644
--- a/drivers/scsi/bfa/bfad_im.c
+++ b/drivers/scsi/bfa/bfad_im.c
@@ -206,7 +206,7 @@
 	spin_lock_irqsave(&bfad->bfad_lock, flags);
 	hal_io = (struct bfa_ioim_s *) cmnd->host_scribble;
 	if (!hal_io) {
-		/* IO has been completed, retrun success */
+		/* IO has been completed, return success */
 		rc = SUCCESS;
 		goto out;
 	}