[SCSI] be2iscsi: Fixing return values

This patch fixes the return values as per comment from Mike Christie

Signed-off-by: Jayamohan Kallickal <jayamohank@serverengines.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c
index d9321ee..cd1b830 100644
--- a/drivers/scsi/be2iscsi/be_iscsi.c
+++ b/drivers/scsi/be2iscsi/be_iscsi.c
@@ -230,7 +230,7 @@
 	if (!beiscsi_ep) {
 		SE_DEBUG(DBG_LVL_1,
 			 "In beiscsi_conn_get_param , no beiscsi_ep\n");
-		return -1;
+		return -ENODEV;
 	}
 
 	switch (param) {
@@ -309,7 +309,7 @@
 		tag = be_cmd_get_mac_addr(phba);
 		if (!tag) {
 			SE_DEBUG(DBG_LVL_1, "be_cmd_get_mac_addr Failed\n");
-			return -1;
+			return -EAGAIN;
 		} else
 			wait_event_interruptible(phba->ctrl.mcc_wait[tag],
 						 phba->ctrl.mcc_numtag[tag]);
@@ -322,7 +322,7 @@
 					    " status = %d extd_status = %d\n",
 					    status, extd_status);
 			free_mcc_tag(&phba->ctrl, tag);
-			return -1;
+			return -EAGAIN;
 		} else {
 			wrb = queue_get_wrb(mccq, wrb_num);
 			free_mcc_tag(&phba->ctrl, tag);
@@ -485,7 +485,7 @@
 	struct tcp_connect_and_offload_out *ptcpcnct_out;
 	unsigned short status, extd_status;
 	unsigned int tag, wrb_num;
-	int ret = -1;
+	int ret = -ENOMEM;
 
 	SE_DEBUG(DBG_LVL_8, "In beiscsi_open_conn\n");
 	beiscsi_ep->ep_cid = beiscsi_get_cid(phba);
@@ -536,7 +536,7 @@
 
 free_ep:
 	beiscsi_free_ep(beiscsi_ep);
-	return -1;
+	return -EBUSY;
 }
 
 /**
@@ -626,7 +626,7 @@
 	if (!tag) {
 		SE_DEBUG(DBG_LVL_8, "upload failed for cid 0x%x\n",
 			 beiscsi_ep->ep_cid);
-		ret = -1;
+		ret = -EAGAIN;
 	} else {
 		wait_event_interruptible(phba->ctrl.mcc_wait[tag],
 					 phba->ctrl.mcc_numtag[tag]);