Return an error on a pollimmediate call if it occurs
Return an error on a pollimmediate call if it occurs

The pollimmediate function never returns an error, so at this stage it
is cosmetic, but it would be easy to miss that the error would never be
handled if the worker function would return one.

Signed-off-by: Roman Mohr <6da0130c5aeef94e5bbaabadbf8017270be25c64@redhat.com>

kubevirt/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,davidvossel/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,davidvossel/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,stu-gott/kubevirt,kubevirt/kubevirt,stu-gott/kubevirt