[SCSI] libosd: Free resources in reverse order of allocation

At osd_end_request first free the request that might
point to pages, then free these pages. In reverse order
of allocation. For now it's just anal neatness. When we'll
use mempools It'll also pay in performance.
Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: NJames Bottomley <James.Bottomley@suse.de>

drivers/scsi/osd/osd_initiator.c

@@ -452,10 +452,6 @@ void osd_end_request(struct osd_request *or)
 {
 	struct request *rq = or->request;
 
-	_osd_free_seg(or, &or->set_attr);
-	_osd_free_seg(or, &or->enc_get_attr);
-	_osd_free_seg(or, &or->get_attr);
-
 	if (rq) {
 		if (rq->next_rq) {
 			_put_request(rq->next_rq);
@@ -464,6 +460,11 @@ void osd_end_request(struct osd_request *or)
 
 		_put_request(rq);
 	}
+
+	_osd_free_seg(or, &or->get_attr);
+	_osd_free_seg(or, &or->enc_get_attr);
+	_osd_free_seg(or, &or->set_attr);
+
 	_osd_request_free(or);
 }
 EXPORT_SYMBOL(osd_end_request);