Exit main sub procedure if called sub is false - vba

Question

I have a 'protection' sub procedure Sub unprot_manually() which can been seen below. I have another sub procedure which could be refereed to as the main procedure of the workbook. I would like to call this protection procedure prior to allowing the user to run the main procedure. With my current code below, the user is able to run the main procedure regardless of entering the correct password. Do I need to create a 'protection' function, define as Boolean, and then pass as a parameter to the main sub?
Sub unprot_manually()
Dim password_input
Dim Pass As String
Application.ScreenUpdating = False
Pass = "xxxxxx"
password_input = Application.InputBox("Password", "Awaiting User Input..")
If password_input = Pass Then
Call Unprot
'Else
'MsgBox ("Incorrect, Good Bye")
'MsgBox ("Incorrect")
End If
Application.ScreenUpdating = True
End Sub

Answer 1

change it from a Sub to a Function, and then check the return value.
e.g. in your main procedure,
if unprot_manually then
rest of program
else
msgbox "Incorrect Passowrd"
end if
your other section would then become:
Function unprot_manually() as Boolean
'set to fail condition until we get a success status
unprot_manually=False
...
If password_input = Pass Then
Call Unprot
'passed, so set success condition
unpot_manually=True
End If
...
End Function

Answer 2

Creating a UDF to do a simple string comparison is a bit OTT. You don't even need a separate procedure for this, just put the If block in your main procedure
Sub Unprot()
If Application.InputBox("Password", "Awaiting User Input..") = "xxxxxx" Then
' Rest of code here
Else
MsgBox "Incorrect Password!"
End If
End Sub
Even better than this, just set the worksheet protection with the UserInterfaceOnly option set to true, then the user can't make any changes on the front end, but your code can still run without obstruction.
UPDATE: (In response to comment)
Just use a variable and check the input:
Sub Unprot()
Dim tempStr As String
tempStr = InputBox("Password", "Awaiting User Input..") ' Assign value via input
If tempStr = vbNullString Then Exit Sub 'If no input, exit sub
If tempStr = "xxxxxx" Then
'Rest of Code
Else
MsgBox "Incorrect Password!"
End If
End Sub