tpm/tpm_atmel: remove unnecessary NULL check

Remove unnecessary NULL check.
Pointer _chip_ cannot be NULL in this instance.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkine@linux.intel.com>
Tested-by: Jarkko Sakkinen <jarkko.sakkine@linux.intel.com> (compilation)
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

drivers/char/tpm/tpm_atmel.c

@@ -144,13 +144,11 @@ static void atml_plat_remove(void)
 	struct tpm_chip *chip = dev_get_drvdata(&pdev->dev);
 	struct tpm_atmel_priv *priv = dev_get_drvdata(&chip->dev);
 
-	if (chip) {
 	tpm_chip_unregister(chip);
 	if (priv->have_region)
 		atmel_release_region(priv->base, priv->region_size);
 	atmel_put_base_addr(priv->iobase);
 	platform_device_unregister(pdev);
-	}
 }
 
 static SIMPLE_DEV_PM_OPS(tpm_atml_pm, tpm_pm_suspend, tpm_pm_resume);