virtio-blk: free vblk-vqs in error path of virtblk_probe()
Else there will be memory leak if alloc_disk() fails. Fixes: 6a27b656 ("block: virtio-blk: support multi virt queues per virtio-blk device") Signed-off-by: Hou Tao <houtao1@huawei.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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