PVS-Studio warning V519 for OpenSSL

#define SSL_TLSEXT_ERR_ALERT_FATAL 2

int ssl3_accept(SSL *s)
{
  ....
  if (ret != SSL_ERROR_NONE)
  {
    ssl3_send_alert(s,SSL3_AL_FATAL,al);
    if (al != TLS1_AD_UNKNOWN_PSK_IDENTITY)
      SSLerr(SSL_F_SSL3_ACCEPT,SSL_R_CLIENTHELLO_TLSEXT);
    ret = SSL_TLSEXT_ERR_ALERT_FATAL;
    ret= -1;
    goto end;
  }
  ....
}

This suspicious code was found in OpenSSL project by PVS-Studio static code analyzer.
Warning message is:
V519 The 'ret' variable is assigned values twice successively. Perhaps this is a mistake. Check lines: 376, 377. s3_srvr.c 377

PVS-Studio is a static analyzer for detecting bugs in the source code of applications written in C, C++, C++11, C++/CX. Site: http://www.viva64.com/en/pvs-studio/