drm/xen-front: checking for NULL instead of IS_ERR
drm_dev_alloc() returns error pointers, it never returns NULL.
Fixes: c575b7eeb8
("drm/xen-front: Add support for Xen PV display frontend")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180508092650.GA661@mwanda
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@ -543,8 +543,8 @@ static int xen_drm_drv_init(struct xen_drm_front_info *front_info)
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front_info->drm_info = drm_info;
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drm_dev = drm_dev_alloc(&xen_drm_driver, dev);
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if (!drm_dev) {
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ret = -ENOMEM;
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if (IS_ERR(drm_dev)) {
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ret = PTR_ERR(drm_dev);
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goto fail;
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}
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