drm/amdgpu: Fix a memory leak

Fix a memory leak in amdgpu_fru_get_product_info().

Cc: Alex Deucher <Alexander.Deucher@amd.com>
Reported-by: Yang Wang <kevinyang.wang@amd.com>
Fixes: 0dbf2c5 ("drm/amdgpu: Interpret IPMI data for product information (v2)")
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Alex Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -170,6 +170,7 @@ int amdgpu_fru_get_product_info(struct amdgpu_device *adev)
 		csum += pia[size - 1];
 	if (csum) {
 		DRM_ERROR("Bad Product Info Area checksum: 0x%02x", csum);
+		kfree(pia);
 		return -EIO;
 	}