interconnect: qcom: msm8974: Walk the list safely on node removal

As we will remove items off the list using list_del(), we need to use a safe
version of the list_for_each_entry().

In addition to the above, instead of duplicating the code, simplify the probe
function error path by calling msm8974_qnoc_remove() directly.

Fixes: 4e60a956 ("interconnect: qcom: add msm8974 driver")
Reported-by: Dmitry Osipenko <digetx@gmail.com>
Cc: Brian Masney <masneyb@onstation.org>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>