modesetting: move closing fd to after we check outputs

On something like cirrus, start X, then attempt to start a second
X while the first is running, if fbdev is installed it'll fail
hard.

Signed-off-by: Dave Airlie <airlied@redhat.com>

hw/xfree86/drivers/modesetting/driver.c

@@ -258,11 +258,11 @@ static Bool probe_hw_pci(const char *dev, struct pci_device *pdev)
 
     id = drmGetBusid(fd);
     devid = ms_DRICreatePCIBusID(pdev);
-    close(fd);
 
     if (id && devid && !strcmp(id, devid))
         ret = check_outputs(fd);
 
+    close(fd);
     free(id);
     free(devid);
     return ret;