Move update setting

After the 1.0.3 version change, the plugin ALWAYS check to see if the table exists, as the version number never matches and never will as it is never updated.

mercator.php

@@ -219,6 +219,9 @@ function check_table() {
 	$result = dbDelta( $schema );
 	$wpdb->ms_global_tables[] = 'domain_mapping';
 
+	// Update db version option.
+	update_site_option( 'mercator.db.version', VERSION );
+
 	if ( empty( $result ) ) {
 		// No changes, database already exists and is up-to-date
 		return 'exists';
@@ -227,9 +230,6 @@ function check_table() {
 	// utf8mb4 conversion.
 	maybe_convert_table_to_utf8mb4( $wpdb->dmtable );
 
-	// Update db version option.
-	update_site_option( 'mercator.db.version', VERSION );
-
 	return 'created';
 }