[patch] serial: trivial code flow simplification

Return failure immediately, so we don't have to test it twice.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx>

Index: work-mm2/drivers/serial/8250_pnp.c
===================================================================
--- work-mm2.orig/drivers/serial/8250_pnp.c     2006-08-18 13:02:48.000000000 
-0600
+++ work-mm2/drivers/serial/8250_pnp.c  2006-08-18 13:04:14.000000000 -0600
@@ -437,11 +437,11 @@
        port.dev = &dev->dev;
 
        line = serial8250_register_port(&port);
+       if (line < 0)
+               return -ENODEV;
 
-       if (line >= 0)
-               pnp_set_drvdata(dev, (void *)((long)line + 1));
-       return line >= 0 ? 0 : -ENODEV;
-
+       pnp_set_drvdata(dev, (void *)((long)line + 1));
+       return 0;
 }
 
 static void __devexit serial_pnp_remove(struct pnp_dev *dev)
-
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