sony-laptop: return a negative error code in sonypi_compat_init()

Return -1 in the error handling case instead of 0, as done elsewhere in
this function.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 2ac045f..b162733 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -4320,7 +4320,8 @@
 		goto err_free_resources;
 	}
 
-	if (sonypi_compat_init())
+	result = sonypi_compat_init();
+	if (result)
 		goto err_remove_input;
 
 	/* request io port */