How can i put 1 icon and 1 iconbutton in TextFormField Flutter

I want to put 1 icon and 1 iconbutton in a textformfield. I added but both settled on the left.

I want to put the iconbutton on the left.

TextFormField(
      keyboardType: TextInputType.visiblePassword,
      obscureText: !_showPassword,
      decoration: InputDecoration(
        labelStyle: TextStyle(color: Colors.black87),
        labelText: 'Enter password',
        prefixIcon: Row(
          mainAxisSize: MainAxisSize.min,
          mainAxisAlignment: MainAxisAlignment.spaceBetween,
          children: <Widget>[
            Icon(Icons.lock),
            IconButton(
                icon: _showPassword ? Icon(Icons.lock_open) : Icon(Icons.lock),
                onPressed: () {
                  setState(() {
                    _showPassword = !_showPassword;
                  });
                }),
          ],
        ),
        border: OutlineInputBorder(),
      ),
    );

Can someone help me?
Thanks

>Solution :

Use suffix icon

TextField(
 prefixIcon: Icon(Icons.lock),
 suffixIcon: IconButton(
                icon: _showPassword ? Icon(Icons.lock_open) : Icon(Icons.lock),
                onPressed: () {
                  setState(() {
                    _showPassword = !_showPassword;
                  });
                }),
),

You can add icon to prefix and icon button to suffix