media: vimc: Fix return value check in vimc_add_subdevs()
In case of error, the function platform_device_register_data() returns ERR_PTR() and never returns NULL. The NULL test in the return value check should be replaced with IS_ERR(). Signed-off-by: NWei Yongjun <weiyongjun1@huawei.com> Acked-by: NHelen Koike <helen.koike@collabora.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@osg.samsung.com>
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