[PATCH 1/1] xen/unpopulated-alloc: fix error return code in fill_list()

[Zhen Lei <thunder.leizhen@xxxxxxxxxx>]

Fix to return a negative error code from the error handling case instead
of 0, as done elsewhere in this function.

Fixes: a4574f63edc6 ("mm/memremap_pages: convert to 'struct range'")
Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Zhen Lei <thunder.leizhen@xxxxxxxxxx>
---
 drivers/xen/unpopulated-alloc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/xen/unpopulated-alloc.c b/drivers/xen/unpopulated-alloc.c
index e64e6befc63b..87e6b7db892f 100644
--- a/drivers/xen/unpopulated-alloc.c
+++ b/drivers/xen/unpopulated-alloc.c
@@ -39,8 +39,10 @@ static int fill_list(unsigned int nr_pages)
        }
 
        pgmap = kzalloc(sizeof(*pgmap), GFP_KERNEL);
-       if (!pgmap)
+       if (!pgmap) {
+               ret = -ENOMEM;
                goto err_pgmap;
+       }
 
        pgmap->type = MEMORY_DEVICE_GENERIC;
        pgmap->range = (struct range) {
-- 
2.25.1