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

[Dan Carpenter]

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.carpen...@linaro.org>
---
 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