smbios: Correct error handling when writing tables

Since write_smbios_table() returns an address, we cannot use it to
return and error number. Also, failing on sysinfo_detect() breaks
existing boards, e.g. chromebook_link

Correct this by logging and swallowing the error.

Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: a5a5756285 ("lib: smbios: Detect system properties via...")

lib/smbios.c

@@ -5,6 +5,8 @@
  * Adapted from coreboot src/arch/x86/smbios.c
  */
 
+#define LOG_CATEGORY	LOGC_BOARD
+
 #include <dm.h>
 #include <env.h>
 #include <linux/stringify.h>
@@ -596,8 +598,12 @@ ulong write_smbios_table(ulong addr)
 
 			parent_node = dev_read_subnode(ctx.dev, "smbios");
 			ret = sysinfo_detect(ctx.dev);
-			if (ret)
-				return ret;
+
+			/*
+			 * ignore the error since many boards don't implement
+			 * this and we can still use the info in the devicetree
+			 */
+			ret = log_msg_ret("sys", ret);
 		}
 	} else {
 		ctx.dev = NULL;