[PATCH v2 -next] tpm: Fix the type of the return value in calc_tpm2_event_size()

[YueHaibing]

calc_tpm2_event_size() has an invalid signature because
it returns a 'size_t' where as its signature says that
it returns 'int'.

Fixes: 4d23cc323cdb ("tpm: add securityfs support for TPM 2.0 firmware event 
log")
Suggested-by: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com>
Signed-off-by: YueHaibing <yuehaib...@huawei.com>
---
v2: modify patch title and commit message as Jarkko suggested
---
 drivers/char/tpm/eventlog/tpm2.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/char/tpm/eventlog/tpm2.c b/drivers/char/tpm/eventlog/tpm2.c
index d8b7713..f824563 100644
--- a/drivers/char/tpm/eventlog/tpm2.c
+++ b/drivers/char/tpm/eventlog/tpm2.c
@@ -37,8 +37,8 @@
  *
  * Returns size of the event. If it is an invalid event, returns 0.
  */
-static int calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
-                               struct tcg_pcr_event *event_header)
+static size_t calc_tpm2_event_size(struct tcg_pcr_event2_head *event,
+                                  struct tcg_pcr_event *event_header)
 {
        struct tcg_efi_specid_event_head *efispecid;
        struct tcg_event_field *event_field;
-- 
2.7.0