tpm,tpm_tis: Avoid warning splat at shutdown

If interrupts are not activated the work struct 'free_irq_work' is not
initialized. This results in a warning splat at module shutdown.

Fix this by always initializing the work regardless of whether interrupts
are activated or not.

cc: stable@vger.kernel.org
Fixes: 481c2d14 ("tpm,tpm_tis: Disable interrupts after 1000 unhandled IRQs")
Reported-by: Jarkko Sakkinen <jarkko@kernel.org>
Closes: https://lore.kernel.org/all/CX32RFOMJUQ0.3R4YCL9MDCB96@kernel.org/Signed-off-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>

drivers/char/tpm/tpm_tis_core.c

@@ -919,8 +919,6 @@ static int tpm_tis_probe_irq_single(struct tpm_chip *chip, u32 intmask,
 	int rc;
 	u32 int_status;
 
-	INIT_WORK(&priv->free_irq_work, tpm_tis_free_irq_func);
-
 	rc = devm_request_threaded_irq(chip->dev.parent, irq, NULL,
 				       tis_int_handler, IRQF_ONESHOT | flags,
 				       dev_name(&chip->dev), chip);
@@ -1132,6 +1130,7 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
 	priv->phy_ops = phy_ops;
 	priv->locality_count = 0;
 	mutex_init(&priv->locality_count_mutex);
+	INIT_WORK(&priv->free_irq_work, tpm_tis_free_irq_func);
 
 	dev_set_drvdata(&chip->dev, priv);