x86/unwind/orc: Remove redundant initialization of 'mid' pointer in __orc_find()

The 'mid' pointer is being initialized with a value that is never read,
it is being re-assigned and used inside a for-loop. Remove the
redundant initialization.

Cleans up clang scan build warning:

  arch/x86/kernel/unwind_orc.c:88:7: warning: Value stored to 'mid' during its initialization is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Link: https://lore.kernel.org/r/20230920114141.118919-1-colin.i.king@gmail.com

Author: ColinIanKing

arch/x86/kernel/unwind_orc.c

@@ -85,7 +85,7 @@ static struct orc_entry *__orc_find(int *ip_table, struct orc_entry *u_table,
 {
 	int *first = ip_table;
 	int *last = ip_table + num_entries - 1;
-	int *mid = first, *found = first;
+	int *mid, *found = first;
 
 	if (!num_entries)
 		return NULL;