drm/amdgpu: return -EFAULT if copy_to_user() fails

If copy_to_user() fails then this should return -EFAULT instead of
-EINVAL.

Fixes: c65b0805e7 ("drm/amdgpu: RAS EEPROM table is now in debugfs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_ras_eeprom.c

@@ -771,7 +771,7 @@ amdgpu_ras_debugfs_eeprom_size_read(struct file *f, char __user *buf,
 	res = min_t(size_t, res, size);
 
 	if (copy_to_user(buf, &data[*pos], res))
-		return -EINVAL;
+		return -EFAULT;
 
 	*pos += res;
 
@@ -950,7 +950,7 @@ amdgpu_ras_debugfs_eeprom_table_read(struct file *f, char __user *buf,
 		res = min_t(size_t, res, size);
 
 		if (copy_to_user(buf, &data[*pos], res))
-			return -EINVAL;
+			return -EFAULT;
 
 		*pos += res;