firmware: tegra: Do not warn on missing memory-region property

The IPC shared memory can reside in system memory or SRAM. In the latter
case the memory-region property is expected not to be present, so do not
warn about it.

Reported-by: Jonathan Hunter <[email protected]>
Fixes: dbe4efe ("firmware: tegra: bpmp: Use of_reserved_mem_region_to_resource() for "memory-region"")
Signed-off-by: Thierry Reding <[email protected]>

Author: thierryreding

drivers/firmware/tegra/bpmp-tegra186.c

@@ -198,7 +198,10 @@ static int tegra186_bpmp_dram_init(struct tegra_bpmp *bpmp)
 
 	err = of_reserved_mem_region_to_resource(bpmp->dev->of_node, 0, &res);
 	if (err < 0) {
-		dev_warn(bpmp->dev, "failed to parse memory region: %d\n", err);
+		if (err != -ENODEV)
+			dev_warn(bpmp->dev,
+				 "failed to parse memory region: %d\n", err);
+
 		return err;
 	}