function pw_rcp_save_user_fields_on_profile_save( $user_id ) {

    update_user_meta( $user_id, 'rcp_profession', sanitize_text_field( $_POST['rcp_profession'] ) );

    update_user_meta( $user_id, 'rcp_location', sanitize_text_field( $_POST['rcp_location'] ) );

}
add_action( 'rcp_user_profile_updated', 'pw_rcp_save_user_fields_on_profile_save', 10 );
add_action( 'rcp_edit_member', 'pw_rcp_save_user_fields_on_profile_save', 10 );