[PATCH] tracing: Fix NULL vs IS_ERR() check in enable_instances()

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

The trace_array_create_systems() function returns error pointers, not
NULL.  Fix the check to match.

Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace boot instance")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 kernel/trace/trace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 71cca10581d6..5462fb10ff64 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -10507,7 +10507,7 @@ __init static void enable_instances(void)
 		}
 
 		tr = trace_array_create_systems(name, NULL, addr, size);
-		if (!tr) {
+		if (IS_ERR(tr)) {
 			pr_warn("Tracing: Failed to create instance buffer %s\n", curr_str);
 			continue;
 		}
-- 
2.43.0