[PATCH] block: rsxx: fix error return code of rsxx_pci_probe()

[Jia-Ju Bai]

Some error handling segments of rsxx_pci_probe() do not return error code, 
so add error code for these segments.

Fixes: 8722ff8cdbfa ("block: IBM RamSan 70/80 device driver")
Reported-by: TOTE Robot <os...@tsinghua.edu.cn>
Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com>
---
 drivers/block/rsxx/core.c | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/block/rsxx/core.c b/drivers/block/rsxx/core.c
index 63f549889f87..6b3b9b31a3e8 100644
--- a/drivers/block/rsxx/core.c
+++ b/drivers/block/rsxx/core.c
@@ -760,13 +760,17 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        pci_set_drvdata(dev, card);
 
        st = ida_alloc(&rsxx_disk_ida, GFP_KERNEL);
-       if (st < 0)
+       if (st < 0) {
+               st = -ENOMEM;
                goto failed_ida_get;
+       }
        card->disk_id = st;
 
        st = pci_enable_device(dev);
-       if (st)
+       if (st) {
+               st = -EIO;
                goto failed_enable;
+       }
 
        pci_set_master(dev);
 
@@ -774,6 +778,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        if (st) {
                dev_err(CARD_TO_DEV(card),
                        "No usable DMA configuration,aborting\n");
+               st = -EIO;
                goto failed_dma_mask;
        }
 
@@ -781,6 +786,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        if (st) {
                dev_err(CARD_TO_DEV(card),
                        "Failed to request memory region\n");
+               st = -EIO;
                goto failed_request_regions;
        }
 
@@ -817,6 +823,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        if (st) {
                dev_err(CARD_TO_DEV(card),
                        "Failed requesting IRQ%d\n", dev->irq);
+               st = -EINVAL;
                goto failed_irq;
        }
 
@@ -824,6 +831,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        st = rsxx_creg_setup(card);
        if (st) {
                dev_err(CARD_TO_DEV(card), "Failed to setup creg interface.\n");
+               st = -EINVAL;
                goto failed_creg_setup;
        }
 
@@ -862,6 +870,7 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        if (st) {
                dev_info(CARD_TO_DEV(card),
                        "Failed to setup DMA engine\n");
+               st = -EINVAL;
                goto failed_dma_setup;
        }
 
@@ -869,14 +878,17 @@ static int rsxx_pci_probe(struct pci_dev *dev,
        card->event_wq = create_singlethread_workqueue(DRIVER_NAME"_event");
        if (!card->event_wq) {
                dev_err(CARD_TO_DEV(card), "Failed card event setup.\n");
+               st = -ENOMEM;
                goto failed_event_handler;
        }
 
        INIT_WORK(&card->event_work, card_event_handler);
 
        st = rsxx_setup_dev(card);
-       if (st)
+       if (st) {
+               st = -EINVAL;
                goto failed_create_dev;
+       }
 
        rsxx_get_card_state(card, &card->state);
 
-- 
2.17.1