The variable `ret` is assigned a value which is unused.
Fix this by removing the redundant `ret = 0;` assignment.

This issue was reported by Coverity Scan.
Report:
CID 1600916: (#1 of 1): Unused value (UNUSED_VALUE)
assigned_value: Assigning value 0 to ret here,
but that stored value is overwritten before it can be used.

Signed-off-by: Amit Vadhavana <av2082000@gmail.com>
---
 kernel/trace/fgraph.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/trace/fgraph.c b/kernel/trace/fgraph.c
index 06d254edaed7..306f1cb7bba3 100644
--- a/kernel/trace/fgraph.c
+++ b/kernel/trace/fgraph.c
@@ -1302,7 +1302,6 @@ int register_ftrace_graph(struct fgraph_ops *gops)
 			return ret;
 		}
 		fgraph_initialized = true;
-		ret = 0;
 	}
 
 	if (!fgraph_array[0]) {
-- 
2.25.1