[PATCH 5.7 275/376] ima: Evaluate error in init_ima()

[Greg Kroah-Hartman]

From: Roberto Sassu <roberto.sassu@xxxxxxxxxx>

commit e144d6b265415ddbdc54b3f17f4f95133effa5a8 upstream.

Evaluate error in init_ima() before register_blocking_lsm_notifier() and
return if not zero.

Cc: stable@xxxxxxxxxxxxxxx # 5.3.x
Fixes: b16942455193 ("ima: use the lsm policy update notifier")
Signed-off-by: Roberto Sassu <roberto.sassu@xxxxxxxxxx>
Reviewed-by: James Morris <jamorris@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Mimi Zohar <zohar@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 security/integrity/ima/ima_main.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -792,6 +792,9 @@ static int __init init_ima(void)
 		error = ima_init();
 	}
 
+	if (error)
+		return error;
+
 	error = register_blocking_lsm_notifier(&ima_lsm_policy_notifier);
 	if (error)
 		pr_warn("Couldn't register LSM notifier, error %d\n", error);