spi: zynqmp_gqspi: Fix not calling dev_err with a device

Use `bus` instead of `dev`.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Tested-by: Patrick Delaunay <patrick.delaunay@st.com>
diff --git a/drivers/spi/zynqmp_gqspi.c b/drivers/spi/zynqmp_gqspi.c
index a72986b..e0e6687 100644
--- a/drivers/spi/zynqmp_gqspi.c
+++ b/drivers/spi/zynqmp_gqspi.c
@@ -346,20 +346,20 @@
 
 	ret = clk_get_by_index(bus, 0, &clk);
 	if (ret < 0) {
-		dev_err(dev, "failed to get clock\n");
+		dev_err(bus, "failed to get clock\n");
 		return ret;
 	}
 
 	clock = clk_get_rate(&clk);
 	if (IS_ERR_VALUE(clock)) {
-		dev_err(dev, "failed to get rate\n");
+		dev_err(bus, "failed to get rate\n");
 		return clock;
 	}
 	debug("%s: CLK %ld\n", __func__, clock);
 
 	ret = clk_enable(&clk);
 	if (ret && ret != -ENOSYS) {
-		dev_err(dev, "failed to enable clock\n");
+		dev_err(bus, "failed to enable clock\n");
 		return ret;
 	}
 	plat->frequency = clock;