Add some exits

src/utils.ipxe

@@ -77,6 +77,7 @@ goto utils_exit
 kernel http://netbootcd.us/downloads/6.4.1/vmlinuz
 initrd http://netbootcd.us/downloads/6.4.1/nbinit4.gz
 boot
+goto utils_exit
 
 :partition_wizard
 kernel ${memdisk} iso raw
@@ -104,6 +105,7 @@ echo -n URL: ${} && read distro_iso
 kernel ${memdisk} iso raw
 initrd ${distro_iso}
 boot
+goto utils_exit
 
 :testpr
 clear github_user