[PATCH] security/integrity/ima/ima_main.c: Fix return value

[wzt wzt <wzt.wzt@gmail.com>]

Hi:
  In security/integrity/ima/ima_main.c ima_file_mmap() called by
security_file_mmap(), it depend on the return value of
ima_file_mmap(), not always return 0. see also in ima_bprm_check().


Signed-off-by: wzt <zhitong.wangzt@alibaba-inc.com>

diff --git a/security/integrity/ima/ima_main.c
b/security/integrity/ima/ima_main.c
index 294b005..705a991 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -271,7 +271,7 @@ int ima_file_mmap(struct file *file, unsigned long prot)
        if (prot & PROT_EXEC)
                rc = process_measurement(file, file->f_dentry->d_name.name,
                                         MAY_EXEC, FILE_MMAP);
-       return 0;
+       return rc;
 }

 /**
@@ -293,7 +293,7 @@ int ima_bprm_check(struct linux_binprm *bprm)

        rc = process_measurement(bprm->file, bprm->filename,
                                 MAY_EXEC, BPRM_CHECK);
-       return 0;
+       return rc;
 }