interconnect: qcom: rpm: fix registration race

interconnect: qcom: rpm: fix registration race

commit 2163b134f5953f88cf75d179d88b3a33cf6ba233 upstream.

The current interconnect provider registration interface is inherently
racy as nodes are not added until the after adding the provider. This
can specifically cause racing DT lookups to fail.

Switch to using the new API where the provider is not registered until
after it has been fully initialised.

Fixes: 7834eb78d031 ("interconnect: qcom: Consolidate interconnect RPM support")
Fixes: d3a5d586798c ("interconnect: qcom: Add MSM8916 interconnect provider driver")
Cc: stable@vger.kernel.org	# 5.7
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Reviewed-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230306075651.2449-9-johan+linaro@kernel.org
Signed-off-by: Georgi Djakov <djakov@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>