RDMA/erdma: Fix ignored return value of init_kernel_qp

The init_kernel_qp interface may fail. Check its return value and free
related resources properly when it does.

Fixes: 1550557 ("RDMA/erdma: Add verbs implementation")
Reviewed-by: Cheng Xu <chengyou@linux.alibaba.com>
Signed-off-by: Boshi Yu <boshiyu@linux.alibaba.com>
Link: https://patch.msgid.link/20250725055410.67520-3-boshiyu@linux.alibaba.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

Author: 201608ybs

drivers/infiniband/hw/erdma/erdma_verbs.c

@@ -1031,7 +1031,9 @@ int erdma_create_qp(struct ib_qp *ibqp, struct ib_qp_init_attr *attrs,
 		if (ret)
 			goto err_out_cmd;
 	} else {
-		init_kernel_qp(dev, qp, attrs);
+		ret = init_kernel_qp(dev, qp, attrs);
+		if (ret)
+			goto err_out_xa;
 	}
 
 	qp->attrs.max_send_sge = attrs->cap.max_send_sge;