If the memory allocation for the auth tag fails, then there is no need to
free it.

Fixes: fce96cf04430 ("virt: Add SEV-SNP guest driver")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
---
 drivers/virt/coco/sev-guest/sev-guest.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c
index f422f9c58ba7..e9704aecd7ee 100644
--- a/drivers/virt/coco/sev-guest/sev-guest.c
+++ b/drivers/virt/coco/sev-guest/sev-guest.c
@@ -152,12 +152,10 @@ static struct snp_guest_crypto *init_crypto(struct snp_guest_dev *snp_dev, u8 *k
 	crypto->a_len = crypto_aead_authsize(crypto->tfm);
 	crypto->authtag = kmalloc(crypto->a_len, GFP_KERNEL_ACCOUNT);
 	if (!crypto->authtag)
-		goto e_free_auth;
+		goto e_free_iv;
 
 	return crypto;
 
-e_free_auth:
-	kfree(crypto->authtag);
 e_free_iv:
 	kfree(crypto->iv);
 e_free_crypto:
-- 
2.34.1

The following commit has been merged into the x86/sev branch of tip:

Commit-ID:     c6fbb759d68898aad40e57d09ed18df6094a1874
Gitweb:        https://git.kernel.org/tip/c6fbb759d68898aad40e57d09ed18df6094a1874
Author:        Rafael Mendonca <rafaelmendsr@gmail.com>
AuthorDate:    Mon, 17 Oct 2022 22:54:25 -03:00
Committer:     Borislav Petkov <bp@suse.de>
CommitterDate: Thu, 27 Oct 2022 14:24:18 +02:00

virt/sev-guest: Remove unnecessary free in init_crypto()

If the memory allocation for the auth tag fails, then there is no need
to free it.

Fixes: fce96cf04430 ("virt: Add SEV-SNP guest driver")
Signed-off-by: Rafael Mendonca <rafaelmendsr@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20221018015425.887891-1-rafaelmendsr@gmail.com
---
 drivers/virt/coco/sev-guest/sev-guest.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c
index f422f9c..e9704ae 100644
--- a/drivers/virt/coco/sev-guest/sev-guest.c
+++ b/drivers/virt/coco/sev-guest/sev-guest.c
@@ -152,12 +152,10 @@ static struct snp_guest_crypto *init_crypto(struct snp_guest_dev *snp_dev, u8 *k
 	crypto->a_len = crypto_aead_authsize(crypto->tfm);
 	crypto->authtag = kmalloc(crypto->a_len, GFP_KERNEL_ACCOUNT);
 	if (!crypto->authtag)
-		goto e_free_auth;
+		goto e_free_iv;
 
 	return crypto;
 
-e_free_auth:
-	kfree(crypto->authtag);
 e_free_iv:
 	kfree(crypto->iv);
 e_free_crypto: