ipmi: bail out if init_srcu_struct fails

In case, init_srcu_struct fails (because of memory allocation failure), we
might proceed with the driver initialization despite srcu_struct not being
entirely initialized.

Fixes: 913a89f ("ipmi: Don't initialize anything in the core until something uses it")
Signed-off-by: Thadeu Lima de Souza Cascardo <[email protected]>
Cc: Corey Minyard <[email protected]>
Cc: [email protected]
Message-Id: <[email protected]>
Signed-off-by: Corey Minyard <[email protected]>

Author: Thadeu Lima de Souza Cascardo

drivers/char/ipmi/ipmi_msghandler.c

@@ -5392,7 +5392,9 @@ static int ipmi_init_msghandler(void)
 	if (initialized)
 		goto out;
 
-	init_srcu_struct(&ipmi_interfaces_srcu);
+	rv = init_srcu_struct(&ipmi_interfaces_srcu);
+	if (rv)
+		goto out;
 
 	timer_setup(&ipmi_timer, ipmi_timeout, 0);
 	mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);