[PATCH -next] xen-platform: fix error return code in platform_pci_init()

[Wei Yongjun]

From: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>

Fix to return a negative error code from the error handling
case instead of 0, otherwise the error condition cann't be
reflected from the return value.

Signed-off-by: Wei Yongjun <yongjun_wei@xxxxxxxxxxxxxxxxx>
---
 drivers/xen/platform-pci.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/xen/platform-pci.c b/drivers/xen/platform-pci.c
index f1947ac..a1361c3 100644
--- a/drivers/xen/platform-pci.c
+++ b/drivers/xen/platform-pci.c
@@ -156,7 +156,8 @@ static int platform_pci_init(struct pci_dev *pdev,
 
 	max_nr_gframes = gnttab_max_grant_frames();
 	grant_frames = alloc_xen_mmio(PAGE_SIZE * max_nr_gframes);
-	if (gnttab_setup_auto_xlat_frames(grant_frames))
+	ret = gnttab_setup_auto_xlat_frames(grant_frames);
+	if (ret)
 		goto out;
 	ret = gnttab_init();
 	if (ret)

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