[PATCH v3 10/22] target/i386/sev: sev_get_attestation_report use g_autofree

[Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>]

From: "Dr. David Alan Gilbert" <dgilbert@xxxxxxxxxx>

Removes a whole bunch of g_free's and a goto.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@xxxxxxxxxx>
Reviewed-by: Connor Kuehl <ckuehl@xxxxxxxxxx>
Reviewed-by: Brijesh Singh <brijesh.singh@xxxxxxx>
Message-Id: <20210603113017.34922-1-dgilbert@xxxxxxxxxx>
Signed-off-by: Philippe Mathieu-Daudé <philmd@xxxxxxxxxx>
---
 target/i386/sev.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

diff --git a/target/i386/sev.c b/target/i386/sev.c
index c88cd808410..aefbef4bb63 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -493,8 +493,8 @@ sev_get_attestation_report(const char *mnonce, Error **errp)
     struct kvm_sev_attestation_report input = {};
     SevAttestationReport *report = NULL;
     SevGuestState *sev = sev_guest;
-    guchar *data;
-    guchar *buf;
+    g_autofree guchar *data = NULL;
+    g_autofree guchar *buf = NULL;
     gsize len;
     int err = 0, ret;
 
@@ -514,7 +514,6 @@ sev_get_attestation_report(const char *mnonce, Error **errp)
     if (len != sizeof(input.mnonce)) {
         error_setg(errp, "SEV: mnonce must be %zu bytes (got %" G_GSIZE_FORMAT ")",
                 sizeof(input.mnonce), len);
-        g_free(buf);
         return NULL;
     }
 
@@ -525,7 +524,6 @@ sev_get_attestation_report(const char *mnonce, Error **errp)
         if (err != SEV_RET_INVALID_LEN) {
             error_setg(errp, "failed to query the attestation report length "
                     "ret=%d fw_err=%d (%s)", ret, err, fw_error_to_str(err));
-            g_free(buf);
             return NULL;
         }
     }
@@ -540,7 +538,7 @@ sev_get_attestation_report(const char *mnonce, Error **errp)
     if (ret) {
         error_setg_errno(errp, errno, "Failed to get attestation report"
                 " ret=%d fw_err=%d (%s)", ret, err, fw_error_to_str(err));
-        goto e_free_data;
+        return NULL;
     }
 
     report = g_new0(SevAttestationReport, 1);
@@ -548,9 +546,6 @@ sev_get_attestation_report(const char *mnonce, Error **errp)
 
     trace_kvm_sev_attestation_report(mnonce, report->data);
 
-e_free_data:
-    g_free(data);
-    g_free(buf);
     return report;
 }
 
-- 
2.31.1