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xen: xenbus: set error code on failure 

Variable err is initialized with 0. As a result, the return value may
be 0 even if get_zeroed_page() fails to allocate memory. This patch fixes
the bug, initializing err with "-ENOMEM".

Signed-off-by: Pan Bian <bianpan2016@163.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Pan Bian 2016-12-05 16:22:22 +08:00 committed by Juergen Gross
parent 0fdb474402
commit 2466d4b9d0
1 changed files with 1 additions and 1 deletions
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2
drivers/xen/xenbus/xenbus_probe.c
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@ -702,7 +702,7 @@ device_initcall(xenbus_probe_initcall);
*/
static int __init xenstored_local_init(void)
{
int err = 0;
int err = -ENOMEM;
unsigned long page = 0;
struct evtchn_alloc_unbound alloc_unbound;