git.sh: reduced indentation in fetch_submodule

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

include/git.sh

@@ -125,7 +125,7 @@ fetch_submodule()
 	[ ! -f "$mcfgdir/module.cfg" ] || . "$mcfgdir/module.cfg" || \
 	    $err "! . $mcfgdir/module.cfg"
 
-	if [ -n "$subrepo" ] || [ -n "$subrepo_bkup" ]; then
+	[ -n "$subrepo" ] || [ -n "$subrepo_bkup" ] || return 0
 	[ -n "$subrev" ] || $err "$1, $mdir: subrev not defined"
 
 	rm -Rf "$tmpgit/$1" || $err "!rm '$mdir' '$1'"
@@ -136,7 +136,6 @@ fetch_submodule()
 		[ -d "$tmpgit/$1" ] && break
 	done
 	[ -d "$tmpgit/$1" ] || $err "!clone $mod $project $mcfgdir $1"
-	fi
 }
 
 patch_submodule()