[PATCH 7/7] IB/hfi1: Remove incorrect IS_ERR check

[Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>]

Remove IS_ERR check from caching code as the function being called does
not actually return error pointers.

Fixes: f19bd643dbde: "IB/hfi1: Prevent NULL pointer deferences in caching code"
Reported-by: Dan Carpenter <dan.carpenter-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>
Reviewed-by: Dean Luick <dean.luick-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
---
 drivers/infiniband/hw/hfi1/user_sdma.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c
index a761f80..77697d6 100644
--- a/drivers/infiniband/hw/hfi1/user_sdma.c
+++ b/drivers/infiniband/hw/hfi1/user_sdma.c
@@ -1144,7 +1144,7 @@ static int pin_vector_pages(struct user_sdma_request *req,
 	rb_node = hfi1_mmu_rb_extract(pq->handler,
 				      (unsigned long)iovec->iov.iov_base,
 				      iovec->iov.iov_len);
-	if (rb_node && !IS_ERR(rb_node))
+	if (rb_node)
 		node = container_of(rb_node, struct sdma_mmu_node, rb);
 	else
 		rb_node = NULL;

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