8180949: Correctly handle exception in TCPChannel.createConnection

Reviewed-by: rriggs

src/share/classes/sun/rmi/transport/tcp/TCPChannel.java

@@ -298,16 +298,12 @@ public class TCPChannel implements Channel {
                     out.flush();
                 }
             } catch (IOException e) {
-                if (e instanceof RemoteException) {
-                    throw (RemoteException) e;
-                } else {
-                    if (conn != null
-                            && e instanceof java.net.SocketTimeoutException)
-                    {
                 try {
                     conn.close();
                 } catch (Exception ex) {}
-                    }
+                if (e instanceof RemoteException) {
+                    throw (RemoteException) e;
+                } else {
                     throw new ConnectIOException(
                         "error during JRMP connection establishment", e);
                 }