iscsi: fix check keys

We report a bogus printk due to a missing break
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

drivers/target/iscsi/iscsi_target_parameters.c

@@ -1395,6 +1395,7 @@ static struct iscsi_param *iscsi_check_key(
 			break;
 		case PHASE_OPERATIONAL:
 			pr_debug("Operational phase.\n");
+			break;
 		default:
 			pr_debug("Unknown phase.\n");
 		}