libceph: reformat __reset_osd()

Reformat __reset_osd() into three distinct blocks of code
handling the three return cases.
Signed-off-by: NAlex Elder <elder@inktank.com>
Reviewed-by: NJosh Durgin <josh.durgin@inktank.com>

net/ceph/osd_client.c

@@ -747,31 +747,35 @@ static void remove_old_osds(struct ceph_osd_client *osdc)
  */
 static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
 {
-	struct ceph_osd_request *req;
-	int ret = 0;
+	struct ceph_entity_addr *peer_addr;
 
 	dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
 	if (list_empty(&osd->o_requests) &&
 	    list_empty(&osd->o_linger_requests)) {
 		__remove_osd(osdc, osd);
-		ret = -ENODEV;
-	} else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd],
-			  &osd->o_con.peer_addr,
-			  sizeof(osd->o_con.peer_addr)) == 0 &&
+
+		return -ENODEV;
+	}
+
+	peer_addr = &osdc->osdmap->osd_addr[osd->o_osd];
+	if (!memcmp(peer_addr, &osd->o_con.peer_addr, sizeof (*peer_addr)) &&
 			!ceph_con_opened(&osd->o_con)) {
+		struct ceph_osd_request *req;
+
 		dout(" osd addr hasn't changed and connection never opened,"
 		     " letting msgr retry");
 		/* touch each r_stamp for handle_timeout()'s benfit */
 		list_for_each_entry(req, &osd->o_requests, r_osd_item)
 			req->r_stamp = jiffies;
-		ret = -EAGAIN;
-	} else {
+
+		return -EAGAIN;
+	}
+
 	ceph_con_close(&osd->o_con);
-		ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd,
-			      &osdc->osdmap->osd_addr[osd->o_osd]);
+	ceph_con_open(&osd->o_con, CEPH_ENTITY_TYPE_OSD, osd->o_osd, peer_addr);
 	osd->o_incarnation++;
-	}
-	return ret;
+
+	return 0;
 }
 
 static void __insert_osd(struct ceph_osd_client *osdc, struct ceph_osd *new)