interconnect: exynos: handle node name allocation failure

Add the missing error handling in case node name allocation ever fails.

Fixes: 2f95b9d5 ("interconnect: Add generic interconnect driver for Exynos SoCs")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20250623142437.23068-1-johan+linaro@kernel.org


Signed-off-by: Georgi Djakov <djakov@kernel.org>