[PATCH -next] drm/amdgpu: Fix missing unlock on error in amdgpu_ras_debugfs_table_read()

[Yang Yingliang]

Add the missing unlock before return from function
amdgpu_ras_debugfs_table_read() in the error handling
case.

Fixes: 9b790694a031 ("drm/amdgpu: RAS EEPROM table is now in debugfs")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Yang Yingliang <yangyingli...@huawei.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
index fc70620369e4..dbeeb4986ca6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c
@@ -912,8 +912,10 @@ static ssize_t amdgpu_ras_debugfs_table_read(struct file 
*f, char __user *buf,
                                 record.retired_page);
 
                        data_len = min_t(size_t, rec_hdr_fmt_size - r, size);
-                       if (copy_to_user(buf, &data[r], data_len))
-                               return -EINVAL;
+                       if (copy_to_user(buf, &data[r], data_len)) {
+                               res = -EINVAL;
+                               goto Out;
+                       }
                        buf += data_len;
                        size -= data_len;
                        *pos += data_len;
-- 
2.25.1