init.sh: create TMPDIR *after* suid check

otherwise, it may get created as the root user, disabling
further use of lbmk until manual user intervention.

Signed-off-by: Leah Rowe <leah@libreboot.org>

include/init.sh

@@ -30,9 +30,6 @@ xbmk_init()
 		exit 0
 	fi
 
-	export PWD="$xbmkpwd"
-	x_ mkdir -p "$basetmp"
-
 	id -u 1>/dev/null 2>/dev/null || \
 	    err "suid check failed" "xbmk_init" "$@"
 
@@ -40,6 +37,9 @@ xbmk_init()
 		err "this command as root is not permitted" "xbmk_init" "$@"
 	fi
 
+	export PWD="$xbmkpwd"
+	x_ mkdir -p "$basetmp"
+
 	for init_cmd in get_version set_env set_threads git_init child_exec; do
 		if ! xbmk_$init_cmd "$@"; then
 			break