ReactJS Warning: TextField is changing an uncontrolled input of type text to be controlled

I am getting this error below.

Warning: TextField is changing an uncontrolled input of type text to be controlled. Input elements should not switch from uncontrolled to controlled (or vice versa). Decide between using a controlled or uncontrolled input element for the lifetime of the component.

I am using material-ui.

Here is my code:

class RegistrationForm extends React.Component{
constructor(props) {
    super(props)
    this.state = { errorText: '', value:this.props }
  }

  phone(event) {
    var strRegExpMobile=/^\d{10}$/;
    if (event.target.value.match(strRegExpMobile)) {
      this.setState({ errorText: '',
                        phone:event.target.value
                     })
    } else {
      this.setState({ errorText: 'Invalid format' })
    }
  }
  handleSubmit(event){
    alert("submit");
    var data={
        phone:this.state.phone
    }
    console.log(data)
  }
  render() {
    return (
        <div>
          <TextField hintText="Phone"
           floatingLabelText="Phone"
           name="phone"
           value={this.state.phone}
           errorText= {this.state.errorText}
           onChange={this.phone.bind(this)}/>

          <RaisedButton label="Submit" 
           primary={true} 
           onClick={this.handleSubmit.bind(this)}/>
        </div>
    )
  }
}

Can any one tell where I am wrong?