[PATCH v4 2/3] x86/sev: fix error handling in sev_es_efi_map_ghcbs_caas()

[Gerd Hoffmann <kraxel@redhat.com>]

Pass up error codes from kernel_map_pages_in_pgd() instead of
returning '1' on failure.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 arch/x86/coco/sev/core.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c
index b6db4e0b936b..3de8c3d2b55d 100644
--- a/arch/x86/coco/sev/core.c
+++ b/arch/x86/coco/sev/core.c
@@ -1050,6 +1050,7 @@ int __init sev_es_efi_map_ghcbs(pgd_t *pgd)
 {
 	struct sev_es_runtime_data *data;
 	unsigned long address, pflags;
+	int retval;
 	int cpu;
 	u64 pfn;
 
@@ -1064,8 +1065,9 @@ int __init sev_es_efi_map_ghcbs(pgd_t *pgd)
 		address = __pa(&data->ghcb_page);
 		pfn = address >> PAGE_SHIFT;
 
-		if (kernel_map_pages_in_pgd(pgd, pfn, address, 1, pflags))
-			return 1;
+		retval = kernel_map_pages_in_pgd(pgd, pfn, address, 1, pflags);
+		if (retval != 0)
+			return retval;
 	}
 
 	return 0;
-- 
2.50.0