ipc: mqueue: remove assignment from IS_ERR argument

Remove assignment from IS_ERR() argument.
This is detected by coccinelle.

Signed-off-by: Chen Ni <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Christian Brauner <[email protected]>

Author: Chen Ni

ipc/mqueue.c

@@ -903,7 +903,8 @@ static int do_mq_open(const char __user *u_name, int oflag, umode_t mode,
 
 	audit_mq_open(oflag, mode, attr);
 
-	if (IS_ERR(name = getname(u_name)))
+	name = getname(u_name);
+	if (IS_ERR(name))
 		return PTR_ERR(name);
 
 	fd = get_unused_fd_flags(O_CLOEXEC);