sh-indent-after-loop-construct

sh-indent-after-loop-construct is a variable defined in `sh-script.el'.
Its value is

+

Documentation:
How much to indent a statement after a loop construct.

This variable is used when the keyword `do' is on the same line as the
loop statement (e.g., `until', `while' or `for').
If the `do' is on a line by itself, then `sh-indent-after-do' is used instead.

You can customize this variable.