msm: kgsl: Do not release an unrequested region

During GMU probe a memory region is no longer requested.
Remove the subsequent release of this region.

CRs-Fixed: 2017390
Change-Id: If4c0cc0cf1febacc54650c77dc047610c2a9aeb6
Signed-off-by: Kyle Piefer <kpiefer@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_gmu.c b/drivers/gpu/msm/kgsl_gmu.c
index 7354e82..f72b3fa 100644
--- a/drivers/gpu/msm/kgsl_gmu.c
+++ b/drivers/gpu/msm/kgsl_gmu.c
@@ -1543,8 +1543,6 @@
 
 	if (gmu->reg_virt) {
 		devm_iounmap(&gmu->pdev->dev, gmu->reg_virt);
-		devm_release_mem_region(&gmu->pdev->dev,
-				gmu->reg_phys, gmu->reg_len);
 		gmu->reg_virt = NULL;
 	}