ipmi: kcs: Fix aspeed_kcs_probe_of_v1()

This needs to return the newly allocated struct but instead it returns
zero which leads to an immediate Oops in the caller.

Fixes: 09f5f680 ("ipmi: kcs: aspeed: Implement v2 bindings")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Message-Id: <20200407122149.GA100026@mwanda>
Signed-off-by: Corey Minyard <cminyard@mvista.com>

drivers/char/ipmi/kcs_bmc_aspeed.c

@@ -271,7 +271,7 @@ static struct kcs_bmc *aspeed_kcs_probe_of_v1(struct platform_device *pdev)
 	kcs->ioreg = ast_kcs_bmc_ioregs[channel - 1];
 	aspeed_kcs_set_address(kcs, slave);
 
-	return 0;
+	return kcs;
 }
 
 static int aspeed_kcs_calculate_channel(const struct kcs_ioreg *regs)