soc: fsl: qbman: Delete useless kfree code

The parameter of kfree function is NULL, so kfree code is useless, delete it.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>

drivers/soc/fsl/qbman/bman.c

@@ -709,7 +709,6 @@ struct bman_pool *bman_new_pool(void)
 	return pool;
 err:
 	bm_release_bpid(bpid);
-	kfree(pool);
 	return NULL;
 }
 EXPORT_SYMBOL(bman_new_pool);