[SCSI] qla4xxx: Break the loop if the sendtargets list was empty

Signed-off-by: NNilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: NVikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: NJames Bottomley <JBottomley@Parallels.com>

drivers/scsi/qla4xxx/ql4_os.c

@@ -4242,6 +4242,9 @@ void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
 
 	wtime = jiffies + (HZ * tmo);
 	do {
+		if (list_empty(&list_st))
+			break;
+
 		qla4xxx_remove_failed_ddb(ha, &list_st);
 		schedule_timeout_uninterruptible(HZ / 10);
 	} while (time_after(wtime, jiffies));