scsi: fcoe: fix build error

I had a typo in a variable name for the previous patch (SCSI: fcoe:
convert bus code to use bus_group) that broke the build, this fixes
that.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
index 8189b96..1f4f22f 100644
--- a/drivers/scsi/fcoe/fcoe_sysfs.c
+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
@@ -558,7 +558,7 @@
 
 static struct attribute *fcoe_bus_attrs[] = {
 	&bus_attr_ctlr_create.attr,
-	&bus_attr_ctrl_destroy.attr,
+	&bus_attr_ctlr_destroy.attr,
 	NULL,
 };
 ATTRIBUTE_GROUPS(fcoe_bus);