[PATCH] crypto: qat - fix error path in adf_isr_resource_alloc()

[Giovanni Cabiddu]

The function adf_isr_resource_alloc() is not unwinding correctly in case
of error.
This patch fixes the error paths and propagate the errors to the caller.

Fixes: 7afa232e76ce ("crypto: qat - Intel(R) QAT DH895xcc accelerator")
Signed-off-by: Giovanni Cabiddu <giovanni.cabi...@intel.com>
Reviewed-by: Marco Chiappero <marco.chiapp...@intel.com>
---
 drivers/crypto/qat/qat_common/adf_isr.c | 29 ++++++++++++++++++-------
 1 file changed, 21 insertions(+), 8 deletions(-)

diff --git a/drivers/crypto/qat/qat_common/adf_isr.c 
b/drivers/crypto/qat/qat_common/adf_isr.c
index c45853463530..e3ad5587be49 100644
--- a/drivers/crypto/qat/qat_common/adf_isr.c
+++ b/drivers/crypto/qat/qat_common/adf_isr.c
@@ -291,19 +291,32 @@ int adf_isr_resource_alloc(struct adf_accel_dev 
*accel_dev)
 
        ret = adf_isr_alloc_msix_entry_table(accel_dev);
        if (ret)
-               return ret;
-       if (adf_enable_msix(accel_dev))
                goto err_out;
 
-       if (adf_setup_bh(accel_dev))
-               goto err_out;
+       ret = adf_enable_msix(accel_dev);
+       if (ret)
+               goto err_free_msix_table;
 
-       if (adf_request_irqs(accel_dev))
-               goto err_out;
+       ret = adf_setup_bh(accel_dev);
+       if (ret)
+               goto err_disable_msix;
+
+       ret = adf_request_irqs(accel_dev);
+       if (ret)
+               goto err_cleanup_bh;
 
        return 0;
+
+err_cleanup_bh:
+       adf_cleanup_bh(accel_dev);
+
+err_disable_msix:
+       adf_disable_msix(&accel_dev->accel_pci_dev);
+
+err_free_msix_table:
+       adf_isr_free_msix_entry_table(accel_dev);
+
 err_out:
-       adf_isr_resource_free(accel_dev);
-       return -EFAULT;
+       return ret;
 }
 EXPORT_SYMBOL_GPL(adf_isr_resource_alloc);
-- 
2.30.2