scsi: esas2r: unlock on error in esas2r_nvram_read_direct()

This error path is missing an unlock.

Fixes: 26780d9e12ed ("[SCSI] esas2r: ATTO Technology ExpressSAS 6G SAS/SATA RAID Adapter Driver")
Link: https://lore.kernel.org/r/20191022102324.GA27540@mwanda
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/esas2r/esas2r_flash.c b/drivers/scsi/esas2r/esas2r_flash.c
index 7bd376d..b02ac38 100644 (file)
--- a/drivers/scsi/esas2r/esas2r_flash.c
+++ b/drivers/scsi/esas2r/esas2r_flash.c
@@ -1197,6 +1197,7 @@ bool esas2r_nvram_read_direct(struct esas2r_adapter *a)
        if (!esas2r_read_flash_block(a, a->nvram, FLS_OFFSET_NVR,
                                     sizeof(struct esas2r_sas_nvram))) {
                esas2r_hdebug("NVRAM read failed, using defaults");
+               up(&a->nvram_semaphore);
                return false;
        }