tpm_tis_core: Set TPM_CHIP_FLAG_IRQ before probing for interrupts

mainline inclusion
from mainline-v5.3-rc6
commit 5b359c7c
category: bugfix
bugzilla: 21420
CVE: NA

-------------------------------------------------

The tpm_tis_core has to set the TPM_CHIP_FLAG_IRQ before probing for
interrupts since there is no other place in the code that would set
it.

Cc: linux-stable@vger.kernel.org
Fixes: 570a3609 ("tpm: drop 'irq' from struct tpm_vendor_specific")
Signed-off-by: NStefan Berger <stefanb@linux.ibm.com>
Signed-off-by: NJarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Conflicts:
  drivers/char/tpm/tpm_tis_core.c
[yyl: adjust context]
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

drivers/char/tpm/tpm_tis_core.c

@@ -981,6 +981,7 @@ int tpm_tis_core_init(struct device *dev, struct tpm_tis_data *priv, int irq,
 			goto out_err;
 		}
 
+		chip->flags |= TPM_CHIP_FLAG_IRQ;
 		if (irq) {
 			tpm_tis_probe_irq_single(chip, intmask, IRQF_SHARED,
 						 irq);