ipmi_ssif: Fix the logic on user-supplied addresses

Returning zero is success.
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/ipmi_ssif.c

@@ -1832,7 +1832,7 @@ static int init_ipmi_ssif(void)
 		rv = new_ssif_client(addr[i], adapter_name[i],
 				     dbg[i], slave_addrs[i],
 				     SI_HARDCODED);
-		if (!rv)
+		if (rv)
 			pr_err(PFX
 			       "Couldn't add hardcoded device at addr 0x%x\n",
 			       addr[i]);